Bethesda, MD : Instituto Nacional de Trastornos Neurólogicos y Accidentes Cerebrovasculares, Los Institutos Nacionales de la Salud, Departamento de Salud y Servicios Humanos, [2010]
Title from title screen (viewed on Nov. 30, 2015).
"Preparado por: Office of Communications and Public Liaison, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Department of Health and Human Services."