Received: 11 September 2019
Accepted: 16 December 2019
First Online: 23 January 2020
Ethics approval and consent to participate
: This prospective and randomized trial was approved by the Ethics Committee of Tohoku Medical and Pharmaceutical University Hospital School of Medicine, Japan (Protocol 2017–2-056). This study was registered with the University Hospital Medical Information Network Clinical Trials Registry in Japan (UMIN000034713). Written informed consent was obtained from every patient for participation in this study prior to undergoing treatment.
: Written informed consent was obtained from every patient for publication of this research report.
: The authors declare that they have no competing interests.