1. Department of Allergy/Immunology and
2. Department of Pediatric Allergy/Immunology and
3. Department of Pediatric Emergency Medicine, University of California San Diego, San Diego, California
4. San Diego Air Pollution Control District, Monitoring and Technical Services Division, San Diego, California
5. Department of Clinical Informatics, Rady Children’s Hospital San Diego, San Diego, California
6. Department of Family Medicine and Public Health and
7. School of Public Health, San Diego State University, San Diego, California
8. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California; and