About the Authors

Xiping Zhang

Roles Resources

Affiliation Department of General Surgery, Qinan Hospital, Tianshui, China

Shujie Ma

Roles Methodology

Affiliation Department of General Surgery, People’s Hospital of Gannan, Hezuo, China

Yinyin Guo

Roles Methodology

Affiliation Department of Pharmacy, Lanzhou University Second Hospital, Lanzhou, China

Yang Luo

Roles Software

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

Laiyuan Li

Roles Writing – original draft

lilaiyuansysu@163.com

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

Competing Interests

The authors have declared that no competing interests exist.