1. Dr Yen's Clinic Gueishan District, Taoyuan Taiwan
2. Section of Endocrinology and Metabolism, Department of Medicine Taipei Veterans General Hospital Taipei Taiwan
3. Section of Endocrinology and Metabolism, Department of Medicine Buddhist Tzu Chi Medical Foundation Dalin Tzu Chi Hospital Dalin Township Taiwan
4. Faculty of Medicine National Yang Ming Chiao Tung University School of Medicine Taipei Taiwan