1. Division of General Pediatrics, Department of Pediatric Environmental Health, Children’s Hospital Boston, Boston, Massachusetts;
2. New England Pediatric Environmental Health Specialty Unit, Boston, Massachusetts;
3. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts;
4. Harlingen Pediatrics Associates, Harlingen, Texas
5. Division of Occupational and Environmental Medicine, Cambridge Health Alliance, Cambridge, Massachusetts;
6. Department of Medicine, Harvard Medical School, Boston, Massachusetts;
7. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts;