Funding for this research was provided by:
National Institute of Information and Communications Technology (178A05)
Received: 22 April 2019
Accepted: 29 November 2019
First Online: 11 December 2019
Ethics approval and consent to participate
: The study protocol was approved by the ethics committees/institutional review boards of Kyoto University Graduate School of Medicine (R0591–6), Nagoya City University Hospital (50–16-0001), Kochi Medical School (28–67), Hiroshima University Hospital (C-105-3), Toho University School of Medicine (A17062). All participants provided written informed consent.
: Not applicable.
: SS has received lecture fees from Otsuka, MSD, Meiji, Eli Lilly, Mochida and Shionogi. KK has received lecture fees from Meiji. TAF has received lecture fees from Meiji, Mitsubishi-Tanabe, MSD and Pfizer. He has received research support from Mitsubishi-Tanabe. All the other authors declare that they have no competing interests.