1. Sanno Hospital, Tokyo, Japan
2. St. Luke Obstetrics & Gynecology Hospital, Oita, Japan
3. Takagi Hospital, Fukuoka, Japan
4. International University of Health and Welfare, Tochigi, Japan
5. Fukuoka Sanno Hospital, Fukuoka, Japan
6. L Data Science, Co., Ltd., Tokyo, Japan
7. St. Mother Obstetrics & Gynecology Hospital, Fukuoka, Japan