1. Department of General Surgery, The Second Affiliated Hospital, School of Medicine, South China University of Technology, 510180 Guangzhou, P. R. China
2. Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, 510180 Guangzhou, P. R. China
3. School of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou International Campus, 511442 Guangzhou, P. R. China
4. National Engineering Research Center for Tissue Restoration and Reconstruction, and Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, 510006 Guangzhou, P. R. China