1. Department of General Practice, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region 830001, P.R. China
2. Department of Vascular Surgery, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region 830001, P.R. China
3. Department of Hepatobiliary Surgery, Graduate School, Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region 830001, P.R. China