About the Authors

Kenichi Makino

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

Kazuhiro Kawamura

kawamura@yf7.so-net.ne.jp

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

Wataru Sato

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

Nanami Kawamura

Affiliations Department of Obstetrics and Gynecology, Akita University School of Medicine, Akita, Japan, Dermatology and Plastic Surgery, Akita University School of Medicine, Akita, Japan

Toshio Fujimoto

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

Yukihiro Terada

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KK. Performed the experiments: KM WS. Analyzed the data: KM KK NK TF YT. Wrote the paper: KM KK.