title: What constitutes 'unprotected sex'?
authors.forename: Deborah J
authors.initials: DJ
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D003075:Coitus; D003268:Contraception Behavior; D003281:Contraceptives, Postcoital / Q000008:administration & dosage*; D004638:Emergency Treatment; D005260:Female; D006801:Humans; D008297:Male; D016079:Refusal to Treat; D021841:Safe Sex / Q000145:classification*
chemical_list: D003281:Contraceptives, Postcoital