EE38 Leveraging National Real-World Evidence to Understand Differences of Economic Burden in Rare Diseases: The Case of Von Willebrand Disease in France. - Nerich, V; Biron Andreani, C; Trossaërt, M; Lefevre, C; Marant Micallef, C; Bornier, N; Belhassen, M; Favre-Besse, F.; Chatelanaz, C; De Pouvourville, G; Beoletto, J; Polack, B (Value in Health, 2024)