Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yong Dam Jeong and Keisuke Ejima and Kwang Su Kim and Shoya Iwanami and Shingo Iwami and Kazuyuki Aihara,Safely return to schools and offices: early and frequent screening with high sensitivity antigen tests effectively identifies COVID-19 patients,,,Cold Spring Harbor Laboratory,2021-10-11,,,,https://cir.nii.ac.jp/crid/1360302868763630720,https://doi.org/10.1101/2021.10.08.21264782