1. Associate medical examiner, chief medical examiner, director of laboratories, respectively, Metropolitan Dade County, Medical Examiner Office, Miami, FL, US.
2. Deputy coroner, Coroner's Office, Denver General Hospital, Denver, CO, US.
3. Associate medical examiner, Broward Medical Examiner Office, Fort Lauderdale, FL, US.
4. Professor and Director of Chemical Epidemiology Division, Department of Epidemiology, University of Miami School of Medicine, US.