1. Department of Obstetrics and Gynecology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan,
2. Department of Endowed Chair for Regeneration of Medicine in Kuwana District, Suzuka University of Medical Science, Suzuka, Japan,
3. Department of Nursing, Nagoya University Graduate School of Medicine, Nagoya, Japan,
4. Department of Obstetrics and Gynecology, Kochi Health Sciences Center, Kochi, Japan,
5. Department of Neonatology, Aizenbashi Hospital, Osaka, Japan,
6. Department of Obstetrics, Kanagawa Children’s Medical Center, Yokohama, Japan,
7. Department of Obstetrics and Gynecology, Mie University Graduate School of Medicine, Tsu, Japan,
8. Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan,
9. Department of Neonatology, Maternal and Perinatal Center, Tokyo Women’s Medical University, Tokyo, Japan, and
10. Department of Neonatology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Japan