Brocklehurst P, Kinghorn GA et al. (1998). «randomised placebo controlled trial of suppressive acyclovir in late pregnancy in women with recurrent genital herpes infection». Br J Obstet Gynaecol105 (3): 275-80. PMID9532986. doi:10.1111/j.1471-0528.1998.tb10086.x.
Brocklehurst P, Kinghorn GA et al. (1998). «randomised placebo controlled trial of suppressive acyclovir in late pregnancy in women with recurrent genital herpes infection». Br J Obstet Gynaecol105 (3): 275-80. PMID9532986. doi:10.1111/j.1471-0528.1998.tb10086.x.