title: Contraceptive failure and the progestogen-only pill.
authors.forename: Louise
authors.initials: L
authors.lastname: Melvin
mesh_terms: D000328:Adult; D015992:Body Mass Index; D001835:Body Weight; D003280:Contraceptives, Oral, Synthetic; D005040:Ethynodiol Diacetate; D005260:Female; D006801:Humans; D055118:Medication Adherence; D009765:Obesity; D011372:Progestins; D017211:Treatment Failure
chemical_list: D003280:Contraceptives, Oral, Synthetic; D011372:Progestins; D005040:Ethynodiol Diacetate