title: Trisomy 18: changes in sex ratio during intrauterine life.
authors.affiliation: Institute of Medical Genetics, University of Zurich, Zurich, Switzerland. niedrist@medgen.unizh.ch
authors.forename: Dunja
authors.initials: D
authors.lastname: Niedrist
authors.forename: Mariluce
authors.initials: M
authors.lastname: Riegel
authors.forename: Josef
authors.initials: J
authors.lastname: Achermann
authors.forename: Valentin
authors.initials: V
authors.lastname: Rousson
authors.forename: Albert
authors.initials: A
authors.lastname: Schinzel
mesh_terms: D002887:Chromosomes, Human, Pair 18; D005260:Female; D005313:Fetal Death / Q000453:epidemiology; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012744:Sex Ratio; D013557:Switzerland / Q000453:epidemiology; D014314:Trisomy