We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRisk of Birth Defects After Use of Acyclovir, Valacyclovir, and Famciclovir in the First TrimesterAuthorsHou, Bing; Zhang, YuanchaoPublicationJAMA, 2010, Vol 304, Issue 20, p2242ISSN0098-7484Publication typearticleDOI10.1001/jama.2010.1701