1. Department of Gastrointestinal Surgery Peking University People' Hospital Beijing China
2. Department of Endoscopic Surgery, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong China
3. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong China
4. Department of Gastrointestinal Surgery Shengli Oilfield Central Hospital Dongying China
5. Femtosecond Application and Research (Guangzhou) Guangzhou China