Association of Olfactory Performance With Motor Decline and Age at Onset in People With Parkinson Disease and the LRRK2 G2019S Variant.

Saunders-Pullman R, Ortega RA, Wang C, Raymond D, Elango S, Leaver K, Urval N, Katsnelson V, Gerber R, Swan M, Shanker V, Alcalay RN, Mirelman A, Brumm MC, Mejia-Santana H, Coffey CS, Marek K, Ozelius LJ, Giladi N, Marder KS, Bressman SB.