Jwa, Seung Chik
Takamura, Masashi
Kuwahara, Akira
Kajihara, Takeshi
Ishihara, Osamu
Funding for this research was provided by:
Health and Labour Sciences Research Grants (H30-Sukoyaka-Ippan-002, H30-Sukoyaka-Ippan-002, H30-Sukoyaka-Ippan-002)
Article History
Received: 25 December 2020
Accepted: 13 August 2021
First Online: 31 August 2021
Competing interests
: The authors declare no competing interests.