1. Guangdong Institute of Gastroenterology Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou 510655 P. R. China
2. PCFM Lab School of Chemistry Sun Yat‐sen University Guangzhou 510006 P. R. China
3. Center of Accurate Diagnosis Treatment and Transformation of Bone and Joint Diseases The Eighth Affiliated Hospital Sun Yat‐sen University Shenzhen 518000 P. R. China