1. Department of Endocrinology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210028, P.R. China
2. Department of Endocrinology, Jiangdu People's Hospital of Yangzhou, Yangzhou, Jiangsu 225200, P.R. China
3. Central Laboratory, Jiangsu Province Blood Center, Nanjing, Jiangsu 210042, P.R. China