Hasegawa, Toshinori http://orcid.org/0000-0001-6535-0229
Kato, Takenori
Yamamoto, Takashi
Naito, Takehiro
Kato, Naoki
Torii, Jun
Ishii, Kazuki
Article History
Received: 28 December 2017
Accepted: 31 January 2018
First Online: 17 April 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.