1. Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital and Soonchunhyang University College of Medicine, Bucheon, South Korea
2. Department of Endocrinology and Metabolism, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
3. Department of Laboratory Medicine and Genetics, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, South Korea
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital and Soonchunhyang University College of Medicine, Bucheon, South Korea
5. Department of Urology, Soonchunhyang University Bucheon Hospital and Soonchunhyang University College of Medicine, Bucheon, South Korea