1. Department of Emergency of The Affiliated Hospital, Weifang Medical University, Weifang, Shandong 261053, P.R. China
2. Central Laboratory of The First Affiliated Hospital, Weifang Medical University, Weifang, Shandong 261053, P.R. China
3. Department of Pharmacology, College of Pharmacology, Weifang Medical University, Weifang, Shandong 261053, P.R. China
4. Department of Gastrointestinal and Anal Diseases Surgery of The Affiliated Hospital, Weifang Medical University, Weifang, Shandong 261053, P.R. China