Received: 13 April 2020
Accepted: 10 June 2020
First Online: 8 July 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Hyogo College of Medicine (No. 3266). The institutional review board waived the requirement for informed consent from patients included in this study.
: Not applicable.
: Y. Takesue received grant support from Shionogi & Co., Ltd., and payment for lectures from Astellas Pharma Inc., and MSD Japan. Other authors have no conflict of interest to declare.