1. Department of Cardiovascular Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
2. Department of Pathology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong
3. Department of Abdominal Surgery, Integrated Hospital of Traditional Chinese Medicine of Southern Medical University, Guangzhou, Guangdong