1. School of Medicine; Universidad Espíritu Santo-Ecuador; Guayaquil Ecuador
2. Gastroenterology Department; Vanderbilt University; Nashville TN
3. Department of Neurology; Hospital Medica Sur; Mexico City Mexico
4. Department of Imaging; Hospital Medica Sur; Mexico City Mexico
5. Sleep Disorders Center; Mayo Clinic College of Medicine; Jacksonville FL
6. Community Center; the Atahualpa Project; Atahualpa Ecuador