1. Department of Endocrinology and Metabolism, Ajou University School of Medicine, Suwon, Korea.
2. Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
3. Department of Endocrinology and Metabolism, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
4. Department of Endocrinology and Metabolism, Pusan National University Hospital, Busan, Korea.
5. Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
6. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Department of Family Medicine, Cheil General Hospital, College of Medicine, Kwandong University, Seoul, Korea.
8. Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, Korea.
9. GlaxoSmithKline, Seoul, Korea, Korea.
10. GlaxoSmithKline, Collegeville, PA, USA.