Comparison of mortality in patients on chemotherapy or immunotherapy during and before the COVID-19 pandemic. Multicenter matched cohort study in Argentina

B. Itkin,S. Straminsky,H. Cáceres,M. Onassis,A. E. García,L. Avanzi,L. Kaminszczik,R. Serna Sejas,M. Rapaccioli,G. Billordo,D. Lavaccara,J. Lanzavecchia,L. Gibbons,E. Settecase and A. Bardach. Comparison of mortality in patients on chemotherapy or immunotherapy during and before the COVID-19 pandemic. Multicenter matched cohort study in Argentina. Revista Peruana de Medicina Experimental y Salud Pública. 2023;40(2):10.17843/rpmesp.2023.402.12519.