1. National Engineering Research Center for Tissue Restoration and Reconstruction South China University of Technology Guangzhou 510006 China
2. Guangdong Institute of Gastroenterology Guangdong Provincial Key Laboratory of Colorectal Pelvic Floor Diseases The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou 510655 China
3. Key Laboratory of Biomedical Engineering of Guangdong Province South China University of Technology Guangzhou 510006 China
4. Peking University Shenzhen Institute Peking University Shenzhen 518055 China
5. China Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China