Igawa, Gene
Ai, Tomohiko
Yamamoto, Takamasa
Ito, Kanami
Nojiri, Shuko
Saito, Kaori
Wakita, Mitsuru
Fukuda, Hiroshi
Hori, Satoshi
Misawa, Shigeki
Miida, Takashi
Seyama, Kuniaki
Takahashi, Kazuhisa
Tabe, Yoko
Naito, Toshio
Article History
Received: 22 December 2021
Accepted: 3 May 2022
First Online: 24 May 2022
Competing interests
: Roche diagnosis provided reagents for Elecsys<sup>®</sup> Anti-SARS-CoV-2 and Elecsys<sup>®</sup> Anti-SARS-CoV-2 S free of cost to the researchers. The company did not take part in (1) the study design, (2) the data analysis and interpretation, and (3) the writing of this paper. All of the authors have no conflicts of interest directly relevant to the content of this article.