1. Associate Chief Physician in the Institute of Respiratory Medicine, Xinqiao Hospital, Chongqing, P.R. China
2. Resident Physician in the Institute of Respiratory Medicine, Xinqiao Hospital, Chongqing, P.R. China
3. Attending Physician in the Department of Cardiology, Daping Hospital, Chongqing, P.R. China
4. Associate Chief Physician in the Department of Pathology, Xinqiao Hospital, Chongqing, P.R. China