Funding for this research was provided by:
Japan Agency for Medical Research and Development (JP20bm0704046, JP20bm0204001, 19bm0204001, 18bk0104017)
Japan Society for the Promotion of Science (JP19104708)
General Insurance Association of Japan
Received: 27 May 2020
Accepted: 27 August 2020
First Online: 3 September 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the principles of the Helsinki Declaration. The use of human iPSCs was approved by ethics committees at Keio University School of Medicine (admission numbers; 20130146).
: Not applicable.
: M.N. declared consultancy role with K-Pharma Inc. and research funding from RMic and Hisamitsu. H.O. declared leadership position at Keio University School of Medicine and is a compensated scientific consultant for San Bio Co. Ltd. and K Pharma Inc. The other authors declared no potential conflicts of interest.