1. Division of Endocrinology and Metabolism, Department of Internal Medicine; Dankook University, College of Medicine, Cheonan, Republic of Korea.
2. Department of Obstetrics and Gynecology, Dankook University, College of Medicine, Cheonan, Republic of Korea.
3. Department of Pathology; Dankook University, College of Medicine, Cheonan, Republic of Korea.
4. Department of Radiology; Dankook University, College of Medicine, Cheonan, Republic of Korea.
5. Department of Otolaryngology, Head-neck Surgery; Dankook University, College of Medicine, Cheonan, Republic of Korea.
6. Department of Nuclear Medicine; Dankook University, College of Medicine, Cheonan, Republic of Korea.
7. Department of Obstetrics and Gynecology, The Catholic University, College of Medicine, Seoul, Republic of Korea.
8. Department of Obstetrics and Gynecology, Chosun University, College of Medicine, Kwangju, Republic of Korea.