1. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical CenterSungkyunkwan University School of Medicine Seoul Republic of Korea
2. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Changwon HospitalSungkyunkwan University School of Medicine Changwon Republic of Korea
3. Department of Health Promotion Center, Samsung Medical CenterSungkyunkwan University School of Medicine Seoul Republic of Korea
4. Department of Clinical Research Design and Evaluation, SAIHSTSungkyunkwan University Seoul Republic of Korea