Taniguchi, Yuri
Matsumoto, Yoko
Furukawa, Ryutaro
Ohara, Sayaka
Usui, Kazuhiro
Article History
Received: 16 August 2017
Accepted: 20 December 2017
First Online: 14 February 2018
Compliance with ethical standards
: The study protocol was reviewed and approved by the Ethics Committee of NTT Medical Center Tokyo.
: The authors declare no conflicts of interest in association with the present study.