Takagi, Daisuke http://orcid.org/0000-0003-0880-5877
Ifuku, Kentaro http://orcid.org/0000-0003-0241-8008
Nishimura, Taishi
Miyake, Chikahiro http://orcid.org/0000-0002-2426-2377
Article History
Received: 16 February 2018
Accepted: 15 May 2018
First Online: 22 May 2018
Compliance with ethical standards
:
: The authors have no conflicts of interest to declare.