1. Assessment of heterogeneity among participants in the Parkinson's Progression Markers Initiative cohort using α-synuclein seed amplification: a cross-sectional study. Issue 5 (May 2023) Authors: Siderowf, Andrew; Concha-Marambio, Luis; Lafontant, David-Erick; Farris, Carly M; Ma, Yihua; Urenia, Paula A; Nguyen, Hieu; Alcalay, Roy N; Chahine, Lana M; Foroud, Tatiana; Galasko, Douglas; Kieburtz, Karl; Merchant, Kalpana; Mollenhauer, Brit; Poston, Kathleen L; Seibyl, John; Simuni, Tanya; Ta... Journal: Lancet neurology Issue: Volume 22:Issue 5(2023) Page Start: 407 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗