CRP and COVID-19: Although several research groups have reported many clinical anomalies associated with the unfavorable progression of COVID-19, such as increases in lactate dehydrogenase, alanine aminotransferase, aspartate aminotransferase, bilirubin, creatinine, cardiac troponin, D-dimers, procalcitonin, and C-reactive protein (CRP) [3,4,5,6], a high neutrophil-to-lymphocyte ratio (NLR) has received special attention [5,7,8].