About the Authors

Hikohiro Okawa

Affiliation Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Seiichi Morokuma

morokuma@med.kyushu-u.ac.jp

Affiliations Research Center for Environmental and Developmental Medical Sciences, Kyushu University, Fukuoka, Japan, Department of Obstetrics and Gynecology, Kyushu University hospital, Fukuoka, Japan

Kana Maehara

Affiliation Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Akiko Arata

Affiliation Division of Physiome, Department of Physiology, Hyogo College of Medicine, Hyogo, Japan

Yoshiyuki Ohmura

Affiliation Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan

Takashi Horinouchi

Affiliation Department of Obstetrics and Gynecology, Kurume University School of Medicine, Kurume, Japan

Yukuo Konishi

Affiliation Center for Baby Science, Doshisha University, Kyoto, Japan

Kiyoko Kato

Affiliation Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: SM. Data curation: HO KM TH. Formal analysis: HO YO. Funding acquisition: SM YK. Investigation: SM HO KM TH. Methodology: SM AA. Project administration: SM YK KK. Resources: AA YO. Software: YO. Supervision: YK KK. Validation: SM. Visualization: HO SM. Writing – original draft: HO SM. Writing – review & editing: AA YK KK.