1. Division of Sports Science and Physical Education, Tsinghua University, Bejing, China
2. School of Social Sciences, Tsinghua University, Beijing, China
3. Institute of Medical Information/Medical Library, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
4. Taishan University, Taian, China
5. Shanghai University of Traditional Chinese Medicine, Shanghai, China
6. Zhedong Orthopedic Hospital, Ningbo, China
7. Current Affiliation: Orthopedics Department, PLA Rocket Force Characteristic Medical Center, Beijing, China
8. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, United States
9. College of Public Health, Hebei University/Hebei Key Laboratory of Public Health Safety, Baoding, China
10. Department of Earth Sciences, Kunming University of Science and Technology, Kunming, China
11. School of Pharmacy, Macau University of Science and Technology, Macau, China