We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMaternal serum cell-free fetal DNA levels are increased in cases of trisomy 13 but not trisomy 18.AuthorsWataganara T; LeShane ES; Farina A; Messerlian GM; Lee T; Canick JA; Bianchi DWPublicationHuman genetics, 2003, Vol 112, Issue 2, p204ISSN0340-6717Publication typearticleDOI10.1007/s00439-002-0853-9