title: Ectopic pregnancies in subjects on progestin-only pills.
authors.forename: A
authors.initials: A
authors.lastname: Netter
mesh_terms: D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000139:chemically induced*; D011372:Progestins / Q000009:adverse effects*
chemical_list: D011372:Progestins