About the Authors

Kaoru Miyazaki

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Tetsuo Maruyama

tetsuo@a5.keio.jp

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Hirotaka Masuda

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Akiko Yamasaki

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Sayaka Uchida

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Hideyuki Oda

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Hiroshi Uchida

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Yasunori Yoshimura

Affiliation Department of Obstetrics and Gynecology, School of Medicine, Keio University, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KM TM. Performed the experiments: KM HM HO AY SU HU TM. Analyzed the data: KM TM. Contributed reagents/materials/analysis tools: KM HM HO AY TM. Wrote the paper: KM YY TM.