Abbreviations
Randomized clinical trial (RCT), Pentoxifylline (PTX), Oxygen saturation (SO2), hemoglobin (Hgb), platelets (PLT) acute respiratory distress syndrome (ARDS), severe acute respiratory syndrome-related Coronavirus (SARS-CoV), Middle East Respiratory Syndrome-related Coronavirus (MERS-CoV),hydroxychloroquine (HCQ), Iran University of Medical Sciences (IUMS), random allocation software (RAS), blood pressure (BP), pulse rate (PR), cardiovascular disease (CVD), glascow coma score (GCS)