Funding for this research was provided by:
Japan Society for the Promotion of Science (KAKENHI (C) 18K10084, KAKENHI (C) 25460803)
Pfizer Health Research Foundation
Received: 16 April 2021
Accepted: 12 August 2021
First Online: 24 August 2021
: The Ethics Committee of Jichi Medical University (Ref. No 20-048), the Ethics Committee for Epidemiological Research of Hiroshima University (Ref. No. 778) and the Research Ethics Committee of Nagasaki University Graduate School of Biomedical Sciences (Ref. No. 13091342) granted ethical approval for this study. Consent for data utilization was obtained from each participant of this study.
: The authors declare that they have no competing interest.