Doi, Atsushi http://orcid.org/0000-0002-2076-2796
Takagi, Masahiko
Katayama, Hisashi
Yoshiyama, Tomotaka
Hayashi, Yusuke
Tatsumi, Hiroaki
Yoshiyama, Minoru
Article History
Received: 8 December 2017
Accepted: 27 April 2018
First Online: 30 April 2018
Compliance with ethical standards
:
: The authors declare that they have no competing interests.