Affiliation: | 1. Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington;2. Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, Washington;3. Children's Core for Biomedical Statistics, Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, Washington;4. Department of Biostatistics, School of Public Health and Community Medicine, University of Washington, Seattle, Washington |