1 Epidemiology and Immunization Services Branch, Health and Human Services Agency, County of San Diego, 3851 Rosecrans Street, Room Y15, San Diego, CA, 92110.
2 Medical Care Services, Health and Human Services Agency, County of San Diego, 9444 Balboa Ave, San Diego, CA, 92123.
3 Sharp Outreach Laboratory, Sharp Healthcare Laboratory, 5651 Copley Drive, Suite B, San Diego, CA, 92111.
4 Coronado Unified School District, 201 Sixth Street, Coronado, CA, 92118.
5 Borrego Springs Elementary School, Borrego Springs Unified School District, Borrego Springs Elementary School, 1315 Palm Canyon Drive, Borrego Springs, CA, 92004.
6 University of California San Diego, Division of Child and Community Health, 9500 Gilman Drive, La Jolla, CA, 92093-0927.