Assessing the non-motor symptoms of Parkinson's disease: MDS- UPDRS and NMS Scale. - Martinez ‐ Martin, P.; Chaudhuri, K. R.; Rojo ‐ Abuin, J. M.; Rodriguez ‐ Blazquez, C.; Alvarez ‐ Sanchez, M.; Arakaki, T.; Bergareche ‐ Yarza, A.; Chade, A.; Garretto, N.; Gershanik, O.; Kurtis, M. M.; Martinez ‐ Castrillo, J. C.; et al. (European Journal of Neurology, 2015)