title: Excess of male fetuses in connection with twin pregnancies resulting in very preterm birth.
authors.forename: A A
authors.initials: AA
authors.lastname: Jakobovits
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D007752:Obstetric Labor, Premature; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012737:Sex Factors; D012744:Sex Ratio; D014427:Twins