Knorz, Sebastian, Susanne Wiebecke, Petra Schulze, Sven Schimanski, Susanne Strifler, Tobias Gassenmaier, Erdwine Klinker, Benedikt Weissbrich, and Hartwig Klinker. 2021. “Challenges in COVID-19 in Patients With Haematological Malignancies: Case Report of a Patient With Mantle Cell Lymphoma”. Archives of Clinical and Medical Case Reports 5 (4):599-609. https://fortunejournals.org/ojs/index.php/acmcr/article/view/22525.