1. Fifth Department of Cardiology, Affiliated Hospital of Jining Medical University, Jining, Shandong, China (mainland)
2. Department of Gastroenterology, Jining No. 1 People’s Hospital, Jining, Shandong, China (mainland)
3. Department of Critical Care Medicine, Affiliated Hospital of Jining Medical University, Jining, Shandong, China (mainland)