1. From the 5th Department of Cardiology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University , Changsha, Hunan, P.R. China
2. Department of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Hunan Normal University, The Fourth Hospital of Changsha , Changsha, Hunan, P.R. China
3. 2nd Emergency Department, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University , Changsha, Hunan, P.R. China
4. Third Xiangya Hospital Central South University , Changsha, Hunan, P.R. China