VARIANT ALK-FUSION POSITIVE ANAPLASTIC LARGE CELL LYMPHOMA (ALCL): A POPULATION-BASED COHORT OF THE NHL-BFM STUDY GROUP. (October 2022) - Damm-Welk, C.; Luedersen, J.; Stadt, U.; Richter, J.; Oschlies, I.; Klapper, W.; Rosenwald, A.; Kalinova, M.; Simonitsch-Klupp, I.; Siebert, R.; Zimmermann, M.; Alawi, M.; et al.