1. The Johns Hopkins University School of Medicine Baltimore Maryland USA
2. The Sixth Affiliated Hospital of Sun Yat‐Sen University Guangzhou Guangdong Providence China
3. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases The Sixth Affiliated Hospital Guangzhou Guangdong Providence China
4. Department of Surgery Columbia University New York New York USA
5. Division of Gastroenterology and Hepatology The Johns Hopkins University Baltimore Maryland USA
6. The Johns Hopkins University Baltimore Maryland USA