title: The term 'egg' and contraception.
authors.forename: A
authors.initials: A
authors.lastname: Laird
mesh_terms: D010064:Embryo Implantation / Q000187:drug effects*; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000494:pharmacology*; D010063:Ovum; D009626:Terminology as Topic
chemical_list: D016912:Levonorgestrel