Department of General Surgery, Shandong Linglong Yingcheng Hospital, Zhaoyuan, Yantai, China
Li Juan Xie
Department of General Surgery, Shandong Linglong Yingcheng Hospital, Zhaoyuan, Yantai, China
Xuan Qiu
Corresponding author. St. Petersburg State University, Saint Petersburg, 199106, Russia.; Department of Faculty Surgery, St. Petersburg State University, Saint Petersburg, Russia, 199106