Key challenges and recommendations for defining organelle membrane contact sites - Tito Calì; Emmanuelle M. Bayer; Emily R. Eden; György Hajnóczky; Benoit Kornmann; Laura Lackner; Jen Liou; Karin Reinisch; Hyun-Woo Rhee; Rosario Rizzuto; Luca Scorrano; Marisa Brini (Nature Reviews Molecular Cell Biology, 2025)