About the Authors

Yinyin Guo

Roles Formal analysis, Software, Writing – original draft

Affiliation Lanzhou University Second Hospital, Lanzhou, China

Yichen Guo

Roles Resources

Affiliation Department of Emergency, The First Hospital of Lanzhou University, Lanzhou, China

Yanxin Luo

Roles Methodology

Affiliation Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China

Xia Song

Roles Writing – review & editing

Affiliation Lanzhou University Second Hospital, Lanzhou, China

Hui Zhao

Roles Formal analysis

lilaiyuansysu@163.com (LL); ldeyzh@163.com (HZ)

Affiliation Lanzhou University Second Hospital, Lanzhou, China

Laiyuan Li

Roles Formal analysis

lilaiyuansysu@163.com (LL); ldeyzh@163.com (HZ)

Affiliation Department of Anorectal Surgery, Gansu Provincial Hospital, Lanzhou, China

Competing Interests

The authors have declared that no competing interests exist.