1. Makita Obstetrics and Gynecology Clinic, Niiza City, Saitama Prefecture, Japan
2. Department of Obstetrics and Gynecology, Chifune General Hospital, Osaka, Osaka Prefecture, Japan
3. Department of Neurology, Kohnan Hospital, Kobe City, Hyogo Prefecture, Japan
4. Department of Neurology, Tatsuoka Neurology Clinic, Kyoto City, Kyoto Prefecture, Japan