Affiliation: | 1. Division of Pediatric Pulmonary and Sleep Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas;2. Respiratory Care Department, Arkansas Children's Hospital, Little Rock, Arkansas;3. Division of Biostatistics, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas;4. Division of Psychology, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas |