Características parkinsonianas: ¿cuándo son enfermedad de Parkinson?

I Litvan¹

• ¹Neuropharmacology Unit, Defense and Veteran Head Injury Program, Henry M. Jackson Foundation, and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892-9130, USA. Litvan1@helix.nih.gov