title: Follicular phase length, cycle day of conception and sex ratio of offspring.
authors.affiliation: Galton Laboratory, University College London, UK.
authors.forename: W H
authors.initials: WH
authors.lastname: James
mesh_terms: D000818:Animals; D005260:Female; D005306:Fertilization; D005498:Follicular Phase; D006801:Humans; D011247:Pregnancy; D012744:Sex Ratio; D013997:Time Factors