MD. Alejandro Jahén García Delgado's letter to the Editor, provides an interesting opinion on the article ""COVID-19 and its Association with Angiotensin-Converting Enzyme Inhibitors and Angiotensin II Receptor Antagonists"" by authors Luis M. Montaño Ramírez and Edgar Flores-Soto, published in Rev Fac Med (UNAM), 2020:63(4).
