1. Endocrinology Department, Ningbo Medical Center Lihuili Hospital, Affiliated to Ningbo University, 1111 Jiangnan Road, Ningbo 315000, China
2. School of Medicine, Ningbo University, 818 Fenghua Road, Ningbo 315211, China
3. Medical Records and Statistics Office, Ningbo Medical Center Lihuili Hospital, 1111 Jiangnan Road, Ningbo 315000, China
4. College of Material Science and Chemical Engineering, Ningbo University of Technology, 201 Fenghua Road, Ningbo 315211, China