Tanaka, Takeyuki http://orcid.org/0000-0002-2040-6345
Moro, Toru
Takatori, Yoshio
Oshima, Hirofumi
Ito, Hideya
Sugita, Naohiko
Mitsuishi, Mamoru
Tanaka, Sakae
Article History
Received: 23 August 2017
Accepted: 16 February 2018
First Online: 26 February 2018
Compliance with ethical standards
: The institutional review board of our hospital granted ethical approval, and informed consent was obtained from all participants before the study commenced.
: The authors declare that they have no conflict of interest.