Received: 23 June 2021
Accepted: 24 September 2021
First Online: 9 October 2021
: The study protocol was approved by the Keio University Faculty of Pharmacy ethics committee for research involving humans (No. 190509-2). Informed consent was waived because of the use of anonymous data.
: Not required.
: KS is a representative director of Japan Medical Data Center Inc., which provided data for this study. HU is a part-time consultant for Eisai Co., Ltd. and Nippon Boehringer Ingelheim Co., Ltd. and has received research funds from CAC Croit Corporation, Shionogi Pharma Co., Ltd., Daiichi-Sankyo Co., Ltd., Astellas Pharma Inc., and Mitsubishi Tanabe Pharma Corporation. All other authors declare no potential competing interests.