1 Guangzhou First People's Hospital, Institutes for Life Sciences, School of Medicine, South China University of Technology Guangzhou 510006 China djzhi@scut.edu.cn.
2 School of Biomedical Sciences and Engineering, South China University of Technology Guangzhou International Campus Guangzhou 510006 China.
3 Department of Biomedical Engineering, Columbia University New York NY 10027 USA.
4 Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University Guangzhou Guangdong 510080 China hewling@mail.sysu.edu.cn.
5 National Engineering Research Center for Tissue Restoration and Reconstruction, Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, Key Laboratory of Biomedical Engineering of Guangdong Province, Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology Guangzhou 510006 China.
6 Guangzhou Regenerative Medicine and Health Guangdong Laboratory Guangzhou 510005 China.