1 Education Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
2 Evidence-based Medicine Center, Chung Shan Medical University Hospital, Taichung, Taiwan; Library, Chung Shan Medical University Hospital, Taichung, Taiwan; School of Medicine, Chung Shan Medical University, Taichung, Taiwan. Electronic address: changhc01@gmail.com.
3 Department and Graduate Institute of Business Administration, National Taiwan University, Taipei, Taiwan; Department of Pharmacology, Chung Shan Medical University, Taichung, Taiwan; Orthopedics Department, Chi-Mei Medical Center, Tainan, Taiwan.