1. Research Group Public Health and Infection, Faculty of Health Sciences, Universidad Tecnologica de Pereira, Pereira, Risaralda, and Organización Latinoamericana para el Fomento de la Investigación en Salud; Bucaramanga Santander Colombia
2. Research Group Public Health and Infection, Faculty of Health Sciences, Universidad Tecnologica de Pereira; Pereira Risaralda Colombia