1. Robert R. Stempel School of Public Health, Florida International University, Miami, FL; at the time of this study, Dr. Trepka and Dr. Pekovic were with Office of Epidemiology and Disease Control, Miami-Dade County Health Department, Miami, FL
2. Childhood Lead Poisoning Prevention Program, Office of Epidemiology and Disease Control, Miami-Dade County Health Department, Miami, FL
3. Office of Epidemiology and Disease Control, Miami-Dade County Health Department, Miami, FL