1. Department of Clinical Nursing, Binzhou Medical University Hospital, Binzhou Medical University , Binzhou 256603 , People’s Republic of China
2. Department of Cellular and Genetic Medicine, Binzhou Medical University , Yantai 264003 , People’s Republic of China
3. Department of Respiratory and Critical Care Medicine, Binzhou Medical University Hospital, Binzhou Medical University , Binzhou 256603 , People’s Republic of China