title: Progestogen-only emergency contraception and ectopic pregnancy.
authors.forename: Mira
authors.initials: M
authors.lastname: Harrison-Woolrych
authors.forename: Jane
authors.initials: J
authors.lastname: Woolley
mesh_terms: D003283:Contraceptives, Postcoital, Synthetic / Q000008:administration & dosage / Q000009:adverse effects*; D004638:Emergency Treatment; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage / Q000009:adverse effects*; D009520:New Zealand; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000139:chemically induced*; D045167:Progesterone Congeners / Q000008:administration & dosage / Q000009:adverse effects*; D018570:Risk Assessment; D006113:United Kingdom
chemical_list: D003283:Contraceptives, Postcoital, Synthetic; D045167:Progesterone Congeners; D016912:Levonorgestrel