title: The causes of the excess males among pre-term and post-term births.
authors.forename: William H
authors.initials: WH
authors.lastname: James
mesh_terms: D044383:Black People; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D012744:Sex Ratio