Funding for this research was provided by:
Ministry of Agriculture, Forestry and Fisheries
Pfizer Health Research Foundation
Japan Society for the Promotion of Science (19H03910, 16H03249, 17K19794, 18K10829)
Received: 6 February 2020
Accepted: 4 August 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: The University Ethics Committees (Niigata University and Tokyo Medical University) granted ethical approval. Written informed consent was obtained from all participants.
: The authors declare no conflict of interest.