1. Stroke Clinic, National Institute of Neurology and Neurosurgery, ‘Manuel Velasco Suárez,’ Mexico City (DF)
2. Facultad de Medicina de la Universidad Autónoma de Guadalajara
3. Stroke Prevention Clinic, Brandon Regional Health Centre, Brandon Manitoba, Canada and Neurology Service, Department of Medicine, University of Manitoba
4. Servicio de Neurologia, National Institute of Nutrition and Medical Sciences ‘Salvador Zubiran,’ Mexico City, Mexico
5. Department of Echocardiography, National Institute of Cardiology ‘Ignacio Chavez,’ Mexico City, Mexico
6. Departamento de Ciencias de la Salud, Universidad del Valle de Mexico, Querétaro, Mexico