Insights and priorities from the 2025 private funders' Parkinson's disease and related disorders large footprint data interoperability summit. - Kirsch LC; Baxi E; Phatak M; Jeanson F; Alonso D; Blauwendraat C; Boersma MC; Brannelly P; Clement MH; Easton A; Jenkins H; Kapur R; et al. (Journal of Parkinson's disease, 2026)