Kakuo, Shingo
Fushimi, Takashi
Kawasaki, Keiko
Nakamura, Junji
Ota, Noriyasu
Article History
Received: 15 January 2018
Accepted: 17 April 2018
First Online: 23 April 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest associated with this manuscript.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Ethics Committee of Kao Corporation and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The present study protocol was registered in the University Hospital Medical Information Network (UMIN), one of the ICMJE-accredited clinical trial sites (ID: UMIN 000031558). This article does not contain any studies with animals performed by any of the authors.
: Written informed consent for participation was obtained from all individual participants in the study.