1. Department of Vascular Surgery, Hulunbuir People’s Hospital, Hulunbuir, China
2. Department of Intensive Medicine, Hulunbuir People’s Hospital, Hulunbuir, China
3. Department of General Surgery, Hulunbuir People’s Hospital, Hulunbuir, China
4. Department of Hematology, Hulunbuir People’s Hospital, Hulunbuir, China