A double-blind study of oral acyclovir for suppression of recurrences of genital herpes simplex virus infection. - Douglas,J.M.; Critchlow,C.; Benedetti,J.; Mertz,G.J.; Connor,J.D.; Hintz,M.A.; Fahnlander,A.; Remington,M.; Winter,C.; Corey,L. (N Engl J Med, 1984)