1. Department of General Surgery, Caoxian people’s Hospital, Heze, Shandong, China
2. Department of Laboratory Medicine, Yidu Central Hospital of Weifang, Shandong, China
3. Department of Anesthesiology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
4. Department of General Medicine, Shengli Oilfield Central Hospital, Dongying, China