[\'Hematology Unit, Fondazione IRCCS Ca\' Granda Ospedale Maggiore Policlinico, Milan, Italy.\', \'Department of Oncology and Oncohematology, University of Milan, Milan, Italy.\']
Are Patients With Autoimmune Cytopenias at Higher Risk of COVID-19 Pneumonia? The Experience of a Reference Center in Northern Italy and Review of the Literature.