FACIT-Fatigue scale in patients with cold agglutinin disease: psychometric validation and estimation of clinically meaningful change - Cella, David; Hill, Quentin A.; Karaouni, Alia; Joly, Florence; Sourdille, Timothee; Shafer, Frank; Wardęcki, Marek; Kosinski, Mark; Röth, Alexander (Frontiers in Hematology, 2025)