title: The authors reply.
authors: Department of Pediatrics, Keck School of Medicine/Children's Hospital of Los Angeles, Los Angeles, California.
authors: Tracey A
authors: TA
authors: Wilkinson
authors: Brown University, Hasbro Children's Hospital, Providence, Rhode Island.
authors: Gabriela
authors: G
authors: Vargas
authors: Des Moines University, Des Moines, Iowa.
authors: Nisha
authors: N
authors: Fahey
authors: University of Massachusetts Medical School, Worcester, Massachusetts.
authors: Emily
authors: E
authors: Suther
authors: Department of Pediatrics, Boston University School of Medicine/Boston Medical Center, Boston, Massachusetts.
authors: Michael
authors: M
authors: Silverstein
mesh_terms: D003281:Contraceptives, Postcoital; D005260:Female; D006297:Health Services Accessibility; D006801:Humans; D010594:Pharmacies
chemical_list: D003281:Contraceptives, Postcoital