1. Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Hospital Department of Health, Executive Yuan, No. 199, Sec. 1, Sanmin Road, Taichung 403, Taiwan
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Taichung Veterans General Hospital, No. 160, Sec. 3, Taichung-Kang Road, Taichung 407, Taiwan