1. Department of Gastrointestinal Surgery, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, Guangdong, China
2. Anesthesia Surgery Center, Lingnan Hospital, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 51000, Guangdong, China
3. Supply Room, Lingnan Hospital, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 51000, Guangdong, China
4. Department of Hepatobiliary Surgery, Nanning Second People’s Hospital, Nanning 530031, Guangxi, China