1. Public Health Studies and Human Service Studies, Department Chair of Public Health Studies, Elon University, Elon, North Carolina.
2. University of Tennessee Health Science Center, College of Medicine, Memphis, Tennessee.
3. Adolescent Clinical Research, Burgess Clinic, Children's National Medical Center, Washington, District of Columbia.
4. Youth Pride and Burgess Clinics, Division of Adolescent and Young Adult Medicine.
5. Occupational Health, Children's National Health System.
6. Department of Pediatrics, Medicine and Epidemiology, George Washington University, Washington, District of Columbia.