Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MCVOY MA,Immunologic evidence for frequent age-related cytomegalovirus reactivation in seropositive immunocompetent individuals,J Infect Dis,,,1989,160,,1-10,https://cir.nii.ac.jp/crid/1573668924899080320,