title: Social groups and prevention of preterm births in a population of twin mothers.
abstract: Prenatal care was equally distributed to all twin pregnant women of the district of Haut de Seine in France in 1989-91, without differences by socio-economic level. No difference in rates of preterm births and very early preterm births (26-31 weeks) was measured by socioeconomic level among twin pregnancies.
authors.affiliation: Maternity of Port-Royal, University René Descartes, Paris, France.
authors.forename: E
authors.initials: E
authors.lastname: Papiernik
authors.forename: A
authors.initials: A
authors.lastname: Richard
authors.forename: J
authors.initials: J
authors.lastname: Tafforeau
authors.forename: L
authors.initials: L
authors.lastname: Keith
mesh_terms: D000328:Adult; D005260:Female; D005313:Fetal Death; D005602:France; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011256:Pregnancy Outcome; D011272:Pregnancy, Multiple; D012959:Socioeconomic Factors; D014427:Twins