Funding for this research was provided by:
NOVARTIS Foundation (Japan) for the Promotion of Science (B-17K16840)
Canadian Institute of Health Research (MOP-15691)
Received: 8 February 2020
Accepted: 14 May 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: The study protocol has been approved by the institutional review board of the University of Fukui Hospital (IRB Number:20180150). This study is a retrospective study. Patients provided written informed consent to participate in the study and anonymous clinical data were used. Patients provided written consent for the use of residual samples and were offered an Opt-out option as disclosed on the website (ExternalRef removed).
: All samples used in this study were de-identified. No personal information was exposed.
: The authors have no conflict of interest.