【作者单位】School of Public Health and Management of Binzhou Medical University, Yantai 264003, China The Norweigian Institute of Public Health, Oslo 0403, Norway The Faculty of Medicine, University of Oslo, Oslo 0317, Norway The Faculty of Medicine, University of Oslo, Oslo 0317, Norway Tibet University Medical College, Lhasa 850012, China Norweigian Center for Minority Health Research, Oslo 0424, Norway Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
