Clinical characteristics and outcome of multiple myeloma patients with concomitant COVID-19 at Comprehensive Cancer Centers in Germany oleh Monika Engelhardt, Khalid Shoumariyeh, Amelie Rösner, Gabriele Ihorst, Francesca Biavasco, Katharina Meckel, Ivana von Metzler, Sebastian Treurich, Holger Hebart, Matthias Grube, Miriam Kull, Florian Bassermann, Kerstin Schäfer-Eckart, Anette Hoferer, Hermann Einsele, Leo Rasche, Ralph Wäsch