We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleUse of Acyclovir, Valacyclovir, and Famciclovir in the First Trimester of Pregnancy and the Risk of Birth DefectsAuthorsPasternak, BjörnPublicationJAMA, 2010, Vol 304, Issue 8, p859ISSN0098-7484Publication typearticleDOI10.1001/jama.2010.1206