Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) LAFFERTY WE,Recurrences after oral and genital herpes simplex virus infection. Influence of site of infection and viral type,N Engl J Med,,,1987,316,,1444-1449,https://cir.nii.ac.jp/crid/1573668924990809600,