1 Intensive Care Unit (ICU), Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, No. 70, Heping Road, Weihai, 264200, Shandong, China.
2 Preventive Medicine Ward, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, 264200, Shandong, China.
3 Intensive Care Unit (ICU), Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, No. 70, Heping Road, Weihai, 264200, Shandong, China. Litianmin2332@outlook.com.