Clinical and dopamine transporter imaging characteristics of leucine-rich repeat kinase 2 (LRRK2) and glucosylceramidase beta (GBA) Parkinson's Disease participants in the Parkinson's Progression Markers Initiative: A cross sectional study.

Simuni T, Brumm MC, Uribe L, Caspell-Garcia C, Coffey CS, Siderowf A, Alcalay R, Trojanowski JQ, Shaw LM, Seibyl J, Singleton A, Toga AW, Galasko D, Foroud T, Nudelman K, Tosun-Turgut D, Poston K, Weintraub D, Mollenhauer B, Tanner CM, Kieburtz K, Chahine LM, Reimer A, Hutten S, Bressman S, Marek on behalf of the Parkinson's Progression Markers Initiative Investigators.