title: Response to letter to the editor.
authors.forename: Lisa L
authors.initials: LL
authors.lastname: Bayer
authors.forename: Alison B
authors.initials: AB
authors.lastname: Edelman
authors.forename: Aaron B
authors.initials: AB
authors.lastname: Caughey
authors.forename: Maria I
authors.initials: MI
authors.lastname: Rodriguez
mesh_terms: D044363:Contraception, Postcoital / Q000191:economics*; D003271:Contraceptive Agents, Female / Q000191:economics*; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000191:economics*; D009649:Norpregnadienes / Q000191:economics*; D011247:Pregnancy; D049168:Pregnancy, Unplanned
chemical_list: D003271:Contraceptive Agents, Female; D009649:Norpregnadienes; D016912:Levonorgestrel