Miyake, Hidehiko
Yamada, Shigehito http://orcid.org/0000-0002-8194-6927
Fujii, Yosuke
Sawai, Hideaki
Arimori, Naoko
Yamanouchi, Yasuko
Ozasa, Yuka
Kanai, Makoto
Sago, Haruhiko
Sekizawa, Akihiko
Takada, Fumio http://orcid.org/0000-0003-4038-4275
Masuzaki, Hideaki
Matsubara, Yoichi
Hirahara, Fumiki
Kugu, Koji
Article History
Received: 9 March 2016
Revised: 18 April 2016
Accepted: 10 May 2016
First Online: 30 June 2016
Competing interests
: The authors declare no conflict of interest. This study was funded by the Health Labour Sciences Research Grant (the Japanese Ministry of Health, Labour and Welfare- 201305008A). KK is a former professor of the Department of Obstetrics and Gynecology, Toho University. At the start of this study, KK was working with the Toho University.
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