1. School of MedicineUniversidad Espíritu Santo—Ecuador Guayaquil Ecuador
2. Department of EpidemiologyGilead Sciences, Inc. Foster City CA USA
3. Department of Neurology, Miller School of MedicineUniversity of Miami Miami Florida USA
4. Community Center, The Atahualpa Project Atahualpa Ecuador
5. National Institute of Neurological Disorders and Stroke Bethesda Maryland