title: A philosopher's take on the rhythm method is rattling opponents of abortion.
authors.forename: Amanda
authors.initials: A
authors.lastname: Schaffer
mesh_terms: D010064:Embryo Implantation; D020964:Embryo Loss; D005260:Female; D006801:Humans; D012252:Natural Family Planning Methods / Q000009:adverse effects* / Q000941:ethics*; D011247:Pregnancy; D026712:Value of Life