1. Department of Clinical Laboratory, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P. R. China
2. Department of Cardiology, The North District of Affiliated Suzhou Hospital, Nanjing Medical University, Suzhou, Jiangsu 215008, P. R. China
3. Department of Gastroenterology, The North District of Affiliated Suzhou Hospital, Nanjing Medical University, Suzhou, Jiangsu 215008, P. R. China