1. Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
2. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
3. Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
4. Reproductive Centre, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
5. Emergency Medicine MD, PGY1, Albert B Chandler Hospital, Lexington, KY, USA
6. Wake Forest Institute of Regenerative Medicine, Wake Forest University, Winston Salem, NC, USA