1. Department of Gastroenterology, Qingdao Eighth People’s Hospital, Qingdao, China
2. Intensive Care Unit, Qingdao Municipal Hospital, Qingdao, China
3. Department of Respiratory Medicine, Qingdao Eighth People’s Hospital, Qingdao, China
4. Department of Endocrinology, Qingdao Eighth People’s Hospital, Qingdao, China
5. Department of Ultrasound, Qingdao Municipal Hospital, Qingdao, China
6. Department of Urology, Qingdao Municipal Hospital, Qingdao, China
7. Department of Surgery, Shanghai Fourth People’s Hospital Affiliated to Tongji University, Shanghai, China