1. Associate Professor in the Department of Obstetrics and Gynecology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-Ku, Kobe City, 650-0017, Japan
2. Staff in the Department of Obstetrics and Gynecology
3. Staff in the Department of Otolaryngology, Kohnan Hospital, Kobe, Japan
4. Chief in the Department of Otolaryngology, Kohnan Hospital, Kobe, Japan