We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleNormal complement C4 values do not exclude hereditary angioedemaAuthorsKarim, YPublicationJournal of Clinical Pathology, 2004, Vol 57, Issue 2, p213ISSN0021-9746Publication typearticleDOI10.1136/jcp.2003.12021