Niimi, Takanaga http://orcid.org/0000-0002-4098-9402
Nanasato, Mamoru
Sugimoto, Mitsuo
Maeda, Hisatoshi
Article History
Received: 30 May 2018
Revised: 8 November 2018
Accepted: 4 December 2018
First Online: 12 December 2018
Compliance with Ethical Standards
:
: Takanaga Niimi, Mamoru Nanasato, Mitsuo Sugimoto, and Hisatoshi Maeda declare that they have no conflict of interest.
: This study was approved by the institutional review board of the hospital on October 25, 2016 and has been performed in accordance with the ethical standards laid down in the Helsinki Declaration of 1964 and later revision.
: All subjects in the study gave written informed consent or the institutional review board waived the need to obtain informed consent.