1. Division of Asthma Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
2. Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
3. Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio.
4. Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
5. Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
6. Division of Dermatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
7. Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
8. Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.