Kawahira, Masahiro
Yokota, Tomoya
Hamauchi, Satoshi
Kawai, Sadayuki
Yoshida, Yukio
Onozawa, Yusuke
Tsushima, Takahiro
Todaka, Akiko
Machida, Nozomu
Yamazaki, Kentaro
Fukutomi, Akira
Yasui, Hirofumi
Article History
Received: 16 January 2018
Accepted: 8 June 2018
First Online: 15 June 2018
Compliance with ethical standards
:
: Kentaro Yamazaki has received honoraria from Yakult. The other authors have no conflict of interests to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of our institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study, formal consent is not required.