title: A beginner's guide to sex.
authors.affiliation: London Department of Postgraduate Medical Education, Stewart House, London, UK. jlauner@londondeanery.ac.uk
authors.forename: John
authors.initials: J
authors.lastname: Launer
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002755:Choice Behavior; D005260:Female; D006801:Humans; D008297:Male; D012098:Reproduction / Q000502:physiology; D012723:Sex; D012725:Sexual Behavior