1. Family Medicine, Family Health Center, Mercer University School of Medicine, Macon, Georgia, USA
2. Family Medicine, Family Health Center, Medical Center of Central Georgia, Macon, Georgia, USA
3. Public Health, La Universidad del Zulia, Maracaibo, Venezuela
4. Center for Biostatistics, Georgia Southern University, Statesboro, Georgia, USA
5. ASOUNI, Maracaibo, Venezuela
6. Medical Center of Central Georgia, Macon, Georgia, USA
7. Institute of Public Health, Georgia State University, Atlanta, Georgia, USA