Clinical trials referenced in this document:
Funding for this research was provided by:
Ministry of the Environment
Received: 28 December 2020
Accepted: 31 August 2021
First Online: 9 September 2021
: K. Hamazaki received a research grant from the First Bank of Toyama Scholarship Foundation, speaking honoraria from the DHA&EPA Association, Niigata Medical Association, Toyama Medical Association, and Toyama Occupational Health Promotion Center, and a supervision fee from Otsuka Pharmaceutical Factory. All remaining authors declare no financial conflicts of interest.