van Rijn, MChristaens, GCMLHagenaars, AMVisser, GHA2025-03-142025-03-141998https://rivm.openrepository.com/handle/10029/637551Maternal serum alpha-fetoprotein in fetal anal atresia and other gasto-intestinal obstructions.ArticlePrenat Diagn 1998; 18:914-212025-03-14