Shimoyama, Yuichiro
Umegaki, Osamu
Agui, Tomoyuki
Kadono, Noriko
Minami, Toshiaki
Article History
Received: 24 May 2017
Accepted: 24 August 2017
First Online: 2 September 2017
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Osaka Medical College (Osaka, Japan).
: Not applicable.
: The authors declare that they have no competing interests.