1. Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China.
2. Department of Endocrinology and Metabolism, The People's Hospital of China Medical University, The People's Hospital of Liaoning Province, Shenyang, People's Republic of China.