1. Department of Pathology Nanfang Hospital Southern Medical University Guangzhou Guangdong China
2. Department of Pathology School of Basic Medical Sciences Southern Medical University Guangzhou Guangdong China
3. Division of Spine Surgery Department of Orthopaedics Nanfang Hospital Southern Medical University Guangzhou Guangdong China
4. Guangdong Provincial Key Laboratory of Gastroenterology Department of Gastroenterology Nanfang Hospital Southern Medical University Guangzhou Guangdong China