EHA/ESMO Clinical Practice Guidelines for the Management of Malignant Lymphoma: Recommendations for the Second Phase of the COVID-19 Pandemic. Issue 2 (27th February 2021) - Dreyling, Martin; Aurer, Igor; Federico, Massimo; Jerkeman, Mats; Kersten, Marie Jose; Linton, Kim; Mey, Ulrich; Tilly, Herve; Buske, Christian