Article History
Received: 15 May 2020
Accepted: 25 July 2020
First Online: 13 August 2020
Disclosures
: Toshiyasu Ojima, Masaki Nakamura, Keiji Hayata, and Hiroki Yamaue have no conflicts of interest or financial ties to disclose. This study was approved by the Wakayama Medical University Institutional Review Board and the Ethics Committee. The study protocol was registered at the University Hospital Medical Information Network (UMIN000031536).