PO-56: Low molecular weight heparin beyond 12 months in patients with cancer associated thrombosis: CAT-LONG study. Issue 213 (May 2022) - Lopez-Ruz, S.; Barca-Hernando, M.; Marin-Romero, S.; Elias-Hernandez, M.T.; Otero-Candelera, R.; Jara-Palomares, L.