1. Department of Vascular Surgery, People’s Hospital of Shouguang, Weifang, Shandong, China;
2. Department of Vascular Surgery, Shandong Provincial Hospital, Jinan, Shandong, China;
3. Department of Surgery, People’s Hospital of Shouguang, Weifang, Shandong, China;
4. Department of Clinical Laboratory, Qilu Hospital, Jinan, Shandong, China