Received: 29 May 2019
Accepted: 28 October 2019
First Online: 7 November 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee at Kobe University Medical School Hospital (approval No: 290078) and the Kobe University Clinical Research Ethical Committee (approval No: C180070; protocol ver 2.0 (8 Februry, 2019).This study requires the written consent of all participants themselves. The subjects are all adults, not minors.
: Not applicable.
: The authors declare that they have no competing interests.