1. Department of Endocrinology, People's Hospital of Chongqing Liang Jiang New Area, No. 199, Renxing Road, Chongqing, China 401121
2. Department of Clinical Biochemistry, The Key Laboratory of Laboratory Medical Diagnostics in the Ministry of Education, College of Laboratory Medicine, Chongqing Medical University, Chongqing, China 400016
3. Department of Clinical Laboratory, People's Hospital of Chongqing Liang Jiang New Area, Chongqing, China 401121
4. Department of Endocrinology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China 400016