1. University of North Carolina at Chapel Hill Curriculum in Toxicology & Environmental Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC; Center for Environmental Medicine, Asthma and Lung Biology, School of Medicine, , Chapel Hill, NC
2. University of North Carolina at Chapel Hill Department of Otolaryngology-Head and Nek Surgery, , Chapel Hill, NC
3. University of North Carolina at Chapel Hill Center for Environmental Medicine, Asthma, and Lung Biology, , Chapel Hill, NC
4. University of North Carolina at Chapel Hill Department of Pediatrics, , Chapel Hill, NC