1. Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Nagoya, Japan
2. Division of Perinatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan
3. Department of Advanced Medicine, Data Science Division, Data Coordinating Center, Nagoya University Hospital, Nagoya, Japan
4. Department of Obstetrics and Gynecology, Fujita Health University School of Medicine, Toyoake, Japan
5. Kishokai Medical Corporation, Nagoya, Japan