1. Department of Gastroenterology; Shengjing Hospital; China Medical University; Shenyang China
2. Central Laboratory; The First Affiliated Hospital of Dalian Medical University; Dalian Liaoning Province China
3. Department of Clinical Pathology; The First Affiliated Hospital of Dalian Medical University; Dalian Liaoning Province China
4. Clinical Laboratory of Gene Diagnosis; The First Affiliated Hospital of Dalian Medical University; Dalian Liaoning Province China