1. School of Dentistry; Universidad Cooperativa de Colombia; Pasto Colombia
2. Department of Pediatric Dentistry; School of Dentistry; Department of Epidemiology; Gillings School of Global Public Health; University of North Carolina at Chapel Hill
3. Department of Psychology; Universidad de Nariño; Pasto Colombia
4. Department of Oral and Maxillofacial Surgery; College of Dentistry; University of Florida