title: Reply of the authors.
authors.affiliation: American Society for Reproductive Medicine, Birmingham, Alabama.
authors.forename: Samantha
authors.initials: S
authors.lastname: Pfeifer
mesh_terms: D000019:Abortifacient Agents / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000188:drug therapy*
chemical_list: D000019:Abortifacient Agents