Hirai, Tomoyasu http://orcid.org/0000-0002-6441-5163
Sato, Masanao
Kato, Tomoki
Shimamoto, Hitoshi
Uno, Kiyu
Otozawa, Nobuyuki
Takahara, Atsushi http://orcid.org/0000-0002-0584-1525
Article History
Received: 5 March 2018
Revised: 7 April 2018
Accepted: 9 April 2018
First Online: 18 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.