Kobayashi, Takahiro
Miura, Masatomo
Abumiya, Maiko
Niioka, Takenori
Kanno, Shuichi
Takahashi, Naoto http://orcid.org/0000-0002-6758-3787
Article History
Received: 23 February 2017
Accepted: 31 January 2018
First Online: 9 February 2018
Compliance with ethical standards
: All procedures were approved by the Institutional Review Board at Akita University Graduate School of Medicine.
: The authors declare that they have no conflict of interest.