1. Division of Cardiology, Department of Internal Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.
2. Division of Endocrinology, Department of Internal Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China.
3. First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China.
4. Division of Endocrinology, Department of Internal Medicine, Qilu Hospital of Shandong University, Jinan, China.