1. Department of Intensive Care Unit, Zhejiang Hospital, Hangzhou, P.R. China
2. Department of Otolaryngology, Jinhua TCM Hospital, Jinhua, P.R. China
3. Department of Intensive Care Unit, Dongyang People Hospital, Dongyang, P.R. China
4. Department of Intensive Care Unit, Zhejiang Provincial Hospital of TCM, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, P.R. China