1. Department of Respiratory Medicine, The Affiliated Xinyu Hospital of Nanchang University, Xinyu, Jiangxi 338000, P.R. China
2. Department of Respiratory Medicine, Xinyu People's Hospital, Xinyu, Jiangxi 338000, P.R. China
3. Department of Endocrinology, Xinyu People's Hospital, Xinyu, Jiangxi 338000, P.R. China