Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEarly amniocentesis: alphafetoprotein levels in amniotic fluid, extraembryonic coelomic fluid and maternal serum between 8 and 13 weeks.AuthorsWATHEN, NEVILLE C.; CASS, PETER L.; CAMPBELL, D. JAMES; KITAU, MURIEL J.; CHARD, TIMPublicationBJOG: An International Journal of Obstetrics & Gynaecology, 1991, Vol 98, Issue 9, p866ISSN1470-0328Publication typeArticleDOI10.1111/j.1471-0528.1991.tb13507.x