title: Differential implantation rates and variations in the sex ratio.
authors.affiliation: Department of Anatomy, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK.
authors.forename: U
authors.initials: U
authors.lastname: Mittwoch
mesh_terms: D010064:Embryo Implantation; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D012744:Sex Ratio