1. Department of Gastroenterology; The First Affiliated Hospital; Sun Yat-Sen University; Guangzhou China
2. Department of Thoracic Surgery; The First Affiliated Hospital; Sun Yat-Sen University; Guangzhou China
3. Department of Pharmacology, Cardiac and Cerebrovascular Research Center; Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou China
4. Guangdong Province Key Laboratory of Brain Function and Disease; Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou China
5. Department of Physiology; Pain Research Center; Zhongshan School of Medicine; Sun Yat-Sen University; Guangzhou China