1 School of Medicine, China Medical University, No. 91, Hsueh-Shuh Rd, Taichung 40402, Taiwan; Department of Orthopedic Surgery, China Medical University Hospital, No. 2, Yuh-Der Rd, Taichung 404, Taiwan; Department of Public Health and Department of Health Services Administration, China Medical University, No. 91, Hsueh-Shuh Rd, Taichung 40402, Taiwan.
2 Department of Orthopedic Surgery, China Medical University Hospital, No. 2, Yuh-Der Rd, Taichung 404, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, No. 91, Hsueh-Shuh Rd, Taichung 40402, Taiwan.
3 School of Medicine, China Medical University, No. 91, Hsueh-Shuh Rd, Taichung 40402, Taiwan; Department of Orthopedic Surgery, China Medical University Hospital, No. 2, Yuh-Der Rd, Taichung 40402, Taiwan.