P944: REAL-WORLD PATIENT CHARACTERISTICS AND SURVIVAL OUTCOMES OF LENALIDOMIDE REFRACTORY VS. LENALIDOMIDE EXPOSED RRMM PATIENTS IN THE HONEUR FEDERATED DATA NETWORK by Ivan Spicka, Ido Lapidot, Maximilian Merz, Jakub Radocha, Martin Stork, Tomas Jelínek, Alexandra Jungova, Jiri Minarik, Jan Soukup, Michel Van Speybroeck, Nolen Perualila, Joris Diels, João Duarte Mendes, Kirsten van Nimwegen, Kai Strobel, Sebastien Wischlen, Henrik Sliwka, Blanca Gros Otero, Roman Hajek

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