Tsutsumi, Satoshi
Ono, Hideo
Yasumoto, Yukimasa
Ishii, Hisato
Article History
Received: 8 August 2018
Accepted: 21 March 2019
First Online: 30 March 2019
Compliance with ethical standards
: The present study was performed in accordance with our institution’s guidelines for human research. Informed consent was obtained from all patients prior to participation in the present study.
: The authors have no conflict of interest concerning the materials or methods used in this study or the findings presented in this paper.