1 Department of Endocrinology and Metabolism, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.
2 Department of Pathology, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.
3 Department of Endocrinology and Gastroenterology, Tianjin Hongqiao Hospital, No. 44 Dingzigu Road, Hongqiao District, Tianjin, 300052, China.
4 Department of Endocrinology and Metabolism, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China. meichuqin@163.com.