1. Department of Endocrinology and Metabolism, Institute of Endocrinology, The First Affiliated Hospital, China Medical University, Liaoning Provincial Key Laboratory of Endocrine Diseases, Shenyang, P. R. China
2. Present address: Department of Emergency, The First Affiliated Hospital of Hebei Medical University, Shijiazhuang, P.R. China
3. Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, P. R. China