Yamamoto, Natsuhiro
Irie, Tomoya
Takaki, Shunsuke
Yamaguchi, Osamu
Goto, Takahisa
Article History
Received: 7 July 2017
Accepted: 29 December 2017
First Online: 12 January 2018
Compliance with ethical standards
:
: This study was approved by Yokohama City University Ethics Committee (Number: B160101004).
: No conflicts of interest declared.