1. School of Medicine; Universidad Espíritu Santo - Ecuador; Guayaquil Ecuador
2. Department of Neurological Sciences; Hospital-Clínica Kennedy; Guayaquil Ecuador
3. Gastroenterology Department; Vanderbilt University; Nashville Tennessee USA
4. Langone Medical Center; School of Medicine; New York University; New York New York USA
5. The Atahualpa Project; Community Center; Atahualpa Ecuador