Martínez-Ramírez, D.; Llorens-Arenas, R.; Rodríguez-Violante, M.; Cervantes-Arriaga, A.; Morales-Briceño, H.; Velázquez-Osuna, S.; Calderón-Fajardo, H. Olfactory Dysfunction and Cognitive Impairment in Patients With Parkinson’s Disease. Arch Neurocien 2014, 19, 183-186.