title: Authors' response.
authors: Department of Pediatrics, Division of General Pediatrics, University of Washington, Seattle, WA.
authors: Charlotte
authors: C
authors: Lewis
authors: Department of Oral Health Sciences, University of Washington, Seattle, WA.
authors: Christy
authors: C
authors: McKinney
authors: Department of Oral Health Sciences, School of Dentistry, University of Washington, Seattle, WA.
authors: Molly
authors: M
authors: Melbye
authors: Department of Biostatistics, University of Washington, Seattle, WA.
authors: Tessa
authors: T
authors: Rue
authors: Department of Anesthesiology, College of Medicine, University of Illinois at Chicago, Chicago, IL.
authors: Helen
authors: H
authors: Lee