1. Department of Respiratory and Critical Care Medicine, Binzhou Medical University Hospital, Binzhou Medical University, Binzhou 256603, China
2. Department of Cellular and Genetic Medicine, School of Pharmaceutical Sciences, Binzhou Medical University, Yantai 264003, China
3. Department of Pathology, Binzhou Medical University Hospital, Binzhou Medical University, Binzhou 256603, China
4. Department of Clinical Nursing, Binzhou Medical University Hospital, Binzhou Medical University, Binzhou 256603, China