1. Department of Cardiology, Dezhou People's Hospital, Dezhou, Shandong 253014, P.R. China
2. Department of Cardiology, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China
3. Department of Endocrinology, Dezhou People's Hospital, Dezhou, Shandong 253014, P.R. China
4. Department of Orthopedics, Dezhou People's Hospital, Dezhou, Shandong 253014, P.R. China