Tsuchida, Naoshi
Nakamura, Fumihiko
Matsuda, Kazunori
Saikawa, Takafumi
Okumura, Takashi
Funding for this research was provided by:
Ministry of Health, Labour and Welfare
Article History
Received: 3 May 2020
Accepted: 11 November 2020
First Online: 26 November 2020
Competing interests
: The authors declare no competing interests.