1 Department of Internal Medicine, Taipei Veterans General Hospital Yuanshan Branch, Yilan, Taiwan.
2 Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
3 Department of Orthopaedic Surgery, Taichung Veterans General Hospital, Taichung, Taiwan.
4 Department of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan.
5 Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
6 Department of Orthodontics and Dentofacial Orthopedics, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts, USA.
7 Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
8 Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
9 Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts, USA.