Nakamura Yosikazu | Department of Public Health, Jichi Medical University
スポンサーリンク
概要
関連著者
-
Nakamura Yosikazu
Department of Public Health, Jichi Medical University
-
Nakamura Yosikazu
千代田区千代田保健所
-
柳川 洋
Department Of Public Health Jichi Medical University
-
OJIMA Toshiyuki
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
Nakamura Y
Department Of Public Health Jichi Medical University
-
OKI Izumi
Department of Public Health, Jichi Medical University
-
Nakamura Yosikazu
自治医科大学地域医療学センター 地域医療学
-
YANAGAWA Hiroshi
Department of Public Health, Jichi Medical School
-
Uehara Ritei
Department of Public Health, Jichi Medical University
-
ISHIKAWA Shizukiyo
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
-
上原 里程
Department Of Public Health Jichi Medical University
-
Ishikawa Shizukiyo
Division Of Community And Family Medicine Center For Community Medicine Jichi Medical University
-
YANAGAWA Hiroshi
Saitama Prefectural University
-
TANIHARA Shinichi
Department of Public Health, Jichi Medical School
-
Yashiro Mayumi
Department of Public Health, Jichi Medical University
-
WATANABE Makoto
Department of Preventive Cardiology, National Cardiovascular Center
-
Yashiro Mayumi
Department Of Public Health Jichi Medical University
-
Gotoh Tadao
Division Of Community And Family Medicine Center For Community Medicine Jichi Medical University
-
Gotoh Tadao
自治医科大学地域医療学センター 地域医療学
-
Gotoh Tadao
自治医科大学地域医療学センター 地域医療学部門
-
Gotoh Tadao
自治医科大学 公衆衛生学
-
Kayaba Kazunori
自治医科大学 地域医療学
-
Gotoh Tadao
自治医科大学 地域医療学
-
Ishikawa Shizukiyo
自治医科大学 医学部循環器内科学
-
Ishikawa Shizukiyo
自治医科大学地域医療学センター
-
GOTOH Tadao
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
-
Ishikawa Shizukiyo
自治医科大学地域医療学センター 地域医療学部門
-
KAYABA Kazunori
School of Health and Social Services, Saitama Prefectural University
-
KAJII Eiji
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
-
Kayaba Kazunori
Department Of Cardiology Jichi Medical University
-
Nakamura Yosikazu
岡山大学 医歯薬学総合研究科衛生学･予防医学
-
Kajii Eiji
Division Of Community And Family Medicine Center For Community Medicine Jichi Medical University
-
NAKAMURA Yosikazu
Jichi Medical School
-
Kajii Eiji
自治医科大学 地域医療学
-
Nakamura Y
Human Genome Center Institute Of Medical Science University Of Tokyo
-
Gotoh Tadao
Wara National Insurance Hospital
-
Ishikawa Suzukiyo
南郷村国民健康保険病院
-
Sadakane Atsuko
Department of Public Health, Jichi Medical University
-
Kario Kazuomi
自治医科大学 地域医療学
-
HAYASAKA Shinya
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
Kitamura K
Faculty Of Medicine Department Of Internal Medicine Division Of Circulatory And Body Fluid Regulatio
-
HASHIMOTO Shuji
Department of Physiologic Laboratory, National Cardiovascular Center
-
Kikuchi Kenjiro
Second Department Of Internal Medicine Sapporo Medical College
-
TSUTSUMI Akizumi
University of Occupational and Environmental Health
-
KIMURA Kenjiro
St. Marianna University School of Medicine
-
Komamura Kazuo
Department Of Cardiovascular Dynamics Research Institute National Cardiovascular Center
-
Kitamura K
Division Of Circulatory And Body Fluid Regulation Faculty Of Medicine Department Of Internal Medicin
-
Kurose K
Department Of Vascular Physiology Research Institute National Cardiovascular Center
-
Nagane Y
Sanai Hospital Iwate Jpn
-
Kawamura Keishiro
The Third Division Internal Medicine Osaka College
-
Kayaba Kazunori
Saitama Prefectural University, School of Health and Social Sciences.
-
Kayaba Kazunori
Department Of Cardiology And Internal Medicine Jichi Medical School
-
Kayaba Kazunori
Saitama Prefectural University
-
AMAGAI Yoko
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
-
Nakamura Y
Department Of Public Health Jichi Medical School
-
Nakamura Yasuyuki
滋賀医科大学 内科学第一
-
Nakamura Y
東京大学医科学研究所ヒトゲノム解析センター ゲノムシークエンス解析分野
-
Kimura Kazuo
Division Of Cardiology Yokohama City University Medical Center
-
NOSE Takayuki
Department of Physics, The Cancer Institute, Japanese Foundation for Cancer Research
-
KARIO Kazuomi
Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medi
-
KATO Hirohisa
Departments of Pediatrics, Kurume University School of Medicine
-
Chihara Izumi
Department of Public Health, Jichi Medical University
-
Aoyama Yasuko
Department of Public Health, Jichi Medical University
-
Kotani Kazuhiko
Department of Public Health, Jichi Medical University
-
TAMAKOSHI Akiko
Department of Preventive Medicine/Biostatistics and Medical Decision Making, Nagoya University Gradu
-
Kitamura K
Department Of Geriatric Medicine Ehime University Graduate School Of Medicine
-
Kohara Katsuhiko
Department Of Cardiovascular Medicine Nephrology And Neurology Faculty Of Medicine And Dialysis Unit
-
NAGO Naoki
Community Medicine Education Center, Japan Association for Development of Community Medicine
-
HARADA Kensuke
Department of Pediatrics and Child Health, Nihon University School of Medicine
-
Komamura K
Department Of Cardiovascular Dynamics Research Institute National Cardiovascular Center
-
SAKATA Kiyomi
Department of Public Health, Wakayama Medical University
-
KAMIOKA Hiroharu
Faculty of Regional Environment Science, Tokyo University of Agriculture
-
MUTOH Yoshiteru
Department of Physical and Health Education, Graduate School of Education, The University of Tokyo
-
OKADA Shinpei
Physical Education and Medicine Research Foundation
-
Kamide Kei
国立循環器病センター 予防検診部
-
Nose Takayuki
Department Of Physics The Cancer Institute Japanese Foundation For Cancer Research
-
NIWA Yasunori
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
-
Kataoka Keiichiro
Kumamoto Ami Study Group
-
OKAYAMA Akira
Department of Preventive Cardiology, National Cardiovascular Center
-
TERAI Masaru
Departments of Pediatrics, Chiba University School of Medicine
-
Kawamura Keishiro
大阪医科大学 内科学iii
-
Tsutsumi Akizumi
自治医科大学 地域医療学
-
Tamakoshi Akiko
Department Of Health Science Shiga University Of Medical Science
-
KAWAKAMI Norito
Department of Mental Health, Tokyo University Graduate School of Medicine
-
Kawakami Norito
岡山大学 医歯学総合研究科衛生学・予防医学
-
SEINO YOSHIKI
Department of Pediatrics, Osaka Koseinenkin Hospital
-
Kario Kazuomi
米国
-
SHIBATA Yosuke
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
YAMADA Tomoyo
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
GOTO Yasuaki
Japan Health and Research Institute
-
NAGAI Masaki
Department of Public Health, Saitama Medical School
-
Inaba Yutaka
Department Of Neurosurgery School Of Medicine Tokyo Medical:dental University
-
Inaba Yutaka
Department Of Epidemiology And Environmental Health Juntendo University School Of Medicine
-
OHNO Yoshiyuki
Department of Preventive Medicine/Biostatistics and Medical Decision Making, Nagoya University Gradu
-
Ohno Y
Department Of Preventive Medicine/biostatistics And Medical Decision Making Nagoya University Gradua
-
Ohno Yoshiyuki
名古屋大学 医学系研究科予防医学
-
Obata Yuki
愛知医科大学 公衆衛生学
-
Obata Yuki
Department Of Public Health Aichi Medical University School Of Medicine
-
Niwa Yasunori
Division Of Community And Family Medicine Center For Community Medicine Jichi Medical University
-
OKABE Nobuhiko
Infectious Disease Surveillance Center, National Institute of Infectious Diseases (NIID)
-
Ae Ryusuke
Department of Public Health, Jichi Medical University
-
Harada Shohei
Department of Health Policy, National Research Institute for Child Health and Development, National
-
ITO Yoshinori
Department of Public Health, Fujita Health University School of Health Sciences
-
SUZUKI Koji
Department of Public Health, Fujita Health University School of Health Sciences
-
WAKAI Kenji
Department of Clinical Epidemiology, University of Occupational and Environmental Health
-
Yamada Masahito
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sc
-
Yamada Masahito
東京医科歯科大学 神経内科
-
Ueshima Hirotsugu
Department of Health Science, Shiga University of Medical Science
-
Kaikita Koichi
Department Of Cardiovascular Medicine Graduate School Of Medical Sciences Kumamoto University
-
Hayakawa Takehito
Department of Hygiene and Preventive Medicine, Fukushima Medical University
-
Yamazaki Osamu
Department of Hepato-Biliary-Pancreatic Surgery, OsakaCity University, Graduate School of Medicine
-
Ito Yoshinori
札幌医科大学 医学部公衆衛生学
-
KAGAMIMORI SADANOBU
Department of Welfare Promotion and Epidemiology, Toyama Medical and Pharmaceutical University
-
HAYAKAWA Norihiko
Department of Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima Univers
-
MATSUISHI Toyojiro
Department of Pediatrics and Child Health, Kurume University School of Medicine
-
Nose Takayuki
久留米大学 医学部公衆衛生学
-
Nakamura Mieko
Department of Epidemiology, National Institute for Longevity Sciences.
-
KITAYUGUCHI Jun
Physical Education and Medicine Research Center Unnan
-
KAMADA Masamitsu
Physical Education and Medicine Research Center Unnan
-
HONDA Takuya
Department of Physical and Health Education, Graduate School of Education, The University of Tokyo
-
Suzuki Hiroshi
Department of Engineering and Applied Science, Faculty of Science and Technology, Sophia University
-
Kohara Katsuhiko
東北大学 臨床薬学
-
KUSAKA Yukinori
Department of Environmental Health, School of Medicine, University of Fukui
-
Kamide Kei
Department Of Geriatric Medicine Ehime University Graduate School Of Medicine
-
Nagane Yutaka
東京大学医科学研究所ヒトゲノム解析センター
-
KIMURA Satoshi
Department of Metabolic Diseases, Faculty of Medicine, University of Tokyo
-
MATSUMURA Yasuhiro
Department of Medicine, National Cancer Center
-
Tada Hiroshi
Department of Cardiology, Gunma Prefectural Cardiovascular Center
-
Wakai K
Department Of Preventive Medicine/biostatistics And Medical Decision Making Nagoya University Gradua
-
NISHINO Yoshikazu
Division of Epidemiology, Miyagi Cancer Center Research Institute
-
HISAMICHI SHIGERU
Division of Public Health, Tohoku University School of Medicine
-
Kida M
Nagoya City Univ. Graduate School Of Medical Sci.
-
Yoshita Katsushi
Nutritional Epidemiology Program, National Institute of Health and Nutrition
-
MATSUISHI Toyojiro
Kurume University School of Medicine
-
Suda Kenji
Department Of Pediatrics And Child Health Kurume University School Of Medicine
-
Suda Kenji
Departjnents Of Pediatrics And Cardiovascular Surgery Natlonal Cardlovascular Center
-
Matsuishi Toyojiro
Department Of Pediatrics And Child Health Kurume University School Of Medicine
-
Matuishi Toyojiro
Department Of Pediatrics And Child Health Kurume University School Of Medicine
-
IEMURA Motofumi
Department of Pediatrics and Child Health, Kurume University School of Medicine
-
Muta Hiromi
Departments of Pediatrics, Kurume University School of Medicine
-
Ishii Masahiro
Kitasato University School of Medicine
-
Asahi Shinichi
自治医科大学 公衛
-
Asahi Shinichi
Department Of Public Health Jichi Medical School
-
KARIO Kazuomi
Department of Cardiology, Jichi Medical University
-
TSUTSUMI Akizumi
Occupational Health Training Center, University of Occupational and Environmental Health
-
Tsutsumi Akizumi
Occupational Health Training Center University Of Occupational And Environmental Health
-
Nishino Yoshikazu
Division Of Epidemiology Miyagi Cancer Center Research Institute
-
Nakazawa Makoto
Minami Tohoku Hospital
-
Nakazawa Makoto
Department of Pediatric Cardiology, Heart Institute of Japan, Tokyo Womens Medical University
-
KAWAKAMI Norito
Hygiene and Preventive Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharm
-
Kawakami Norito
Department Of Mental Health Department Of Psychiatric Nursing Tokyo University Graduate School Of Me
-
INABA Yutaka
Juntendo University School of Medicine
-
Kotani Kazuhiko
Department Of Clinical Laboratory Medicine Jichi Medical University
-
中村 好一
Department of Public Health, Jichi Medical University
-
柳川 洋
Saitama Prefectural Universit
-
MATSUMOTO Masatoshi
Division of Community and Family Medicine, Centre for Community Medicine, Jichi Medical University
-
Ishikawa Shizukiyo
Departement of Cardiology, Jichi Medical University School of Medicine
-
NODA Tatsuya
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
MURATA Chiyoe
Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine
-
Ito Yoshihisa
Department of Labolatory Medicine, Asahikawa Medical College
-
KONDO Naomi
Department of Pediatrics, Gifu University Graduate School of Medicine
-
Tanaka H
Tanaka Hospital
-
Tanaka Hisato
札幌医科大学 医学部
-
MATSUYAMA Yutaka
Department of Biostatistics, Graduate School of Medicine, University of Tokyo
-
Inaba Yutaka
Juntendo Univ. Tokyo Jpn
-
Inaba Yutaka
愛知医科大学 公衆衛生学
-
Kajii Eiji
Department Of Community And Family Medicine Jichi Medical School
-
KAWADO Miyuki
Department of Hygiene, Fujita Health University School of Medicine
-
SUZUKI Sadao
Department of Health Promotion and Preventive Medicine, Nagoya City University Graduate School of Me
-
SEKI Nao
Department of Infectious Disease Control and International Medicine, Niigata University Graduate Sch
-
Seki N
Division Of Public Health Department Of Infectious Disease Control And International Medicine Niigat
-
Seki Nao
School Of Health Sciences Fac. Of Medicine Niigata Univ.
-
Seki Nao
新潟大学 医歯学総合研究科
-
Nakamura Y
Center For Genomic Medicine Riken
-
IWAI Nobuo
Chugoku Occupational Health Association
-
Mikami Kazuya
Department Of Urology Graduate School Of Medical Sciences Kyoto Prefectural University Of Medicine
-
Mikami Kazuya
京都府立医科大学 泌尿器科
-
Yasui Yoshinori
Infectious Disease Surveillance Center, National Institute of Infectious Diseases.
-
TAGUCHI Hirokuni
Kochi Medical School
-
Matsumoto Toshio
First Department of Internal Medicine, University of Tokushima, School of Medicine
-
MATSUURA NOBUO
Department of Pediatrics, Kitasato University School of Medicine
-
HATTORI Masakazu
Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University
-
Hamajima N
Department Of Preventive Medicine-biostatistics And Medical Decision Making Nagoya University Gradua
-
Seki Nao
Division Of Public Health Department Of Infectious Disease Control And International Medicine Niigat
-
Kimura Kenjiro
Division Of Cardiology Yokohama City University Medical Center
-
Nose T
Tottori Univ.
-
KAWAMURA Takashi
Kyoto University Center for Student Health
-
Niwa Koichiro
Department Of Adult Chd Chiba Cardiovascular Center
-
Niwa Koichiro
Department Of Adult Congenital Heart Disease And Pediatrics
-
MIZOOKA Masafumi
Hiroshima Prefectural Setoda Hospital
-
IGARASHI Masahiro
Department of Community and Family Medicine, Jichi Medical School
-
FUKUSHI Masaru
Sapporo City Institute of Public Health
-
OKAMOTO Naoyuki
Department of Epidemiology, Kanagawa Cancer Research Institute
-
Kohno Yoichi
Department Of Pediatrics Graduate School Of Medicine Chiba University
-
KAMISAWA TERUMI
Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital
-
EGAWA NAOTO
Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital
-
SAKAKI Nobuhiro
Department of Internal Medicine, Tokyo Metropolitan Komagome Hospital
-
IWAI Nobuo
Department of Public Health, Faculty of Medicine, Tottori University
-
TANAKA Heizo
Department of Epidemiology, Medical Research Institute, Tokyo Medical and Dental University
-
AKAMIZU Takashi
Department of Medicine and Clinical Science, Kyoto University Graduate School of Medicine
著作論文
- Incidence of Total Stroke, Stroke Subtypes, and Myocardial Infarction in the Japanese Population: The JMS Cohort Study
- Characteristics and Validity of a Web-Based Kawasaki Disease Surveillance System in Japan
- Incidence of Total Stroke, Stroke Subtypes, and Myocardial Infarction in the Japanese Population : The JMS Cohort Study
- Association Between Stroke and Metabolic Syndrome in a Japanese Population : Jichi Medical School (JMS) Cohort Study
- Effect of Revision of Japanese Diagnostic Criterion for Fever in Kawasaki Disease on Treatment and Cardiovascular Outcome
- 日本における川崎病発生状況 : 1999-2002年の全国調査より
- Sleep Duration and Incidence of Cardiovascular Events in a Japanese Population : The Jichi Medical School Cohort Study
- Amount and Frequency of Alcohol Consumption and All-Cause Mortality in a Japanese Population : The JMS Cohort Study
- Physical Activity and All-cause Mortality in Japan : The Jichi Medical School (JMS) Cohort Study
- Dietary Patterns and Levels of Blood Pressure and Serum Lipids in a Japanese Population
- Validity and Reliability of Single-item Questions about Physical Activity
- Association between Food Group Intake and Serum Total Cholesterol in the Japanese Population : NIPPON DATA 80/90
- Mortality From Congenital Cardiovascular Malformations in Japan, 1968 Through 1997
- Seroepidemiology of hepatitis B virus infection among children in Mongolia : Results of a nationwide survey
- Impact of the Universal Hepatitis B Immunization Program in Mongolia : Achievements and Challenges
- Associations between dietary intake and breast milk dioxin levels in Tokyo, Japan
- Case-control study of giant coronary aneurysms due to Kawasaki disease
- Respiratory Symptoms Correlating to Smoking Prevalence : The National Nutrition Survey and the National Life-style Survey in Japan
- Giant coronary aneurysms due to Kawasaki disease : A case-control study
- Trends in Asthma Morbidity and Mortality in Japan between 1984 and 1996
- A Case-control Study of Creutzfeldt-Jakob Disease in Japan: Transplantation of Cadaveric Dura Mater was a Risk Factor
- Repeatability of the Questionnaire for the Aging Level Indices
- Relationship Between Breast Milk Feeding and Atopic Dermatitis in Children
- Process and Current Status of the Epidemiologic Studies on Cedar Pollinosis in Japan
- Relationship Between the Level of Activities of Daily Living and Chronic Medical Conditions Among the Elderly
- A Comparative Epidemiological Study of the Effects of Regular Exercise on Health Level
- Estimation of the Future Numbers of Patients with Mental Disorders in Japan Based on the Results of National Patient Surveys
- Family History Evaluation in Epidemiologic Studies ; an Evaluation of Bias in the Conventional Methods and a proposal of a New One
- Update of the Epidemiology of Kawasaki Disease in Japan : From the Results of 1993-94 Nationwide Survey
- Metabolic Syndrome Mortality in a Population-Based Cohort Study : Jichi Medical School (JMS) Cohort Study
- Comparison of C-reactive Protein Levels between Serum and Plasma Samples on Long-term Frozen Storage after a 13.8 Year Interval : The JMS Cohort Study
- Consumption of Dairy Products and Cancer Risks
- Age at Menopause and Mortality in Japan : the Jichi Medical School Cohort Study
- Sleep Duration and Mortality in Japan : the Jichi Medical School Cohort Study
- Analyses of Fatal Cases of Kawasaki Disease in Japan Using Vital Statistical Data over 27 Years
- Accidents Associated with Bathing in Home Care Services for the Aged in Japan
- Geographic Difference of Mortality of Creutzfeldt-Jakob Disease in Japan
- Mortality Among Persons with a History of Kawasaki Disease in Japan : Existence of Cardiac Sequelae Elevated the Mortality
- 川崎病既往者の死亡率 : 第3回目の追跡
- Monthly Observation of the Number of Patients with Kawasaki Disease and its Incidence Rates in Japan : Chronological and Geographical Observation from Nationwide Surveys
- Epidemiologic Features of Kawasaki Disease in Japan : Results from the Nationwide Survey in 2005-2006
- Mortality Among Persons With a History of Kawasaki Disease in Japan : Mortality Among Males With Cardiac Sequelae is Significantly Higher Than That of the General Population
- 急性期川崎病に対する免疫グロブリン療法不応例への対応 : 第17回川崎病全国調査結果の分析
- Survey of Physicians Working for AIDS Core Hospitals on Foodborne Disease Reporting
- A Comparative Epidemiological Study on the Effects of Physical Fitness on Health Level
- A Case-Control Study on Familial Aggregation of Colorectal Cancer
- Human H5N2 Avian Influenza Infection in Japan and the Factors Associated with High H5N2-Neutralizing Antibody Titer
- Prevalence of Idiopathic Hypoparathyroidism and Pseudohypoparathyroidism in Japan
- 低出生体重児に対する喫煙の日本における人口寄与割合
- Proteinuria is a Prognostic Marker for Cardiovascular Mortality : NIPPON DATA 80, 1980-1999
- A Case-control Study of Asthma Death and Life-threatening Attack : Their Possible Relationship with Prescribed Drug Therapy in Japan
- Glycated Hemoglobin Levels and Their Correlation With Atherosclerotic Risk Factors in a Japanese Population : The Jichi Medical School Cohort Study 1993-1995
- The Characteristics of People Requesting HIV Antibody Tests at Public Health Centers in Japan
- Numbers of People with HIV/AIDS Reported and Not Reported to Surveillance in Japan
- Delays and Continuation of Hospital Visits Among HIV-Infected Persons and AIDS Cases in Japan
- Effects of Dioxins and Polychlorinated Biphenyls (PCBs) on Thyroid Function in Infants Born in Japan : Report from Research on Environmental Health
- Prevalence and Clinico-Epidemiology of Familial Graves' Disease in Japan based on Nationwide Epidemiologic Survey in 2001
- Comprehensive Health Education Combining Hot Spa Bathing and Lifestyle Education in Meddle-aged and Elderly Women : One-year Follow-up on Randomized Controlled Trial of Three- and Six-month Interventions
- A Case-control Study of Ossification of the Posterior Longitudinal Ligament of the Spine in Japan
- Effectiveness of Comprehensive Health Education Combining Lifestyle Education and Hot Spa Bathing for Male White-Collar Employees : A Randomized Controlled Trial with 1-Year Follow-Up
- Social Class Inequalities in Self-rated Health and Their Gender and Age Group Differences in Japan
- Twelve-month prevalence, severity, and treatment of common mental disorders in communities in Japan : preliminary finding from the World Mental Health Japan Survey 2002-2003
- Daily Magnesium Intake and Serum Magnesium Concentration among Japanese People
- Physical Activity and Cardiovascular Disease in Japan : The Jichi Medical School Cohort Study
- Epidemiologic Features of Kawasaki Disease in Japan : Results of the 2007-2008 Nationwide Survey
- Use of a Population-Based Cancer Registry to Calculate Twenty-Year Trends in Cancer Incidence and Mortality in Fukui Prefecture