Funding for this research was provided by:
Japan Agency for Medical Research and Development (20182231)
Received: 29 April 2020
Accepted: 6 July 2020
First Online: 22 July 2020
Ethics approval and consent to participate
: Ethical approval for this study (No. 2889) was provided by the Ethics Committee of Fukushima Medical University.
: Not applicable.
: KM has received research grants from Chugai, Pfizer, and AbbVie. The rest of the authors declares that they have no competing interests.