1. Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an Jiaotong University, Xi'an, China;
2. Department of Endocrinology, Xi'an No.3 Hospital, Xi'an, China;
3. First Department of Orthopedics, Second Affiliated Hospital, Xi'an Jiaotong University Health Science Center, Xi’an Jiaotong University, Xi'an, China;
4. Zhang’s Orthopaedic Hospital, Taizhou, China;
5. School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an Jiaotong University, Xi'an, China