| Affiliation: | 1. Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay;2. National Control Program for HIV/AIDS/STI, Ministry of Public Health and Social Welfare, Asuncion, Paraguay;3. Dirección General de Investigación, Universidad Sudamericana, Pedro Juan Caballero, Paraguay;4. Polytechnic School, National University of Asuncion, San Lorenzo, Paraguay;5. Division Statisticians, Association of Paraguayan Statisticians, Asuncion, Paraguay;6. Regional Health Research Institute, Universidad Nacional de Caaguazu, Caaguazú, Paraguay;7. National Control Program for HIV/AIDS/STI, Ministry of Public Health and Social Welfare, Asuncion, Paraguay Regional Health Research Institute, Universidad Nacional de Caaguazu, Caaguazú, Paraguay;8. Departamento de Salud Pública, Universidad de la Frontera, Temuco, Chile;9. Center for Public Health Research, San Francisco Department of Public Health, San Francisco, California, USA |
