1. 1Department of Endocrinology, Tianjin First Central Hospital, Tianjin, China
2. 2Laboratory of Acute Abdomen Disease, Tianjin NanKai Hospital, Tianjin, China
3. 3Clinical Laboratory, Tianjin First Central Hospital, Tianjin, China
4. 4Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
5. 5Department of Orthopaedics, Tianjin Hospital, Tianjin, China