COVID-19(80) Patient(65) SARS-CoV-2(63) therapy(39) Treatment(36) Result(34) Cancer(34) supplementary material(33) vaccination(31) Analysis(26) reported(26) SARS-COV-2 infection(25) analyzed(25) Infection(23) coronavirus disease(23) leukemia(22) outcome(21) patients(21) risk(21) Mortality(20) cancer patient(19) COVID-19 patient(19) Vaccine(19) hematological(19) BNT162b2(19) age(19) majority(18) Efficacy(18) significantly(17) median(17)