GPT and COVID-19: ALT, Alanine aminotransferase; AST, aspartate aminotransferase; BUN, blood urea nitrogen; CI, confidence interval; COPD, chronic obstructive pulmonary disease; COVID-19, coronavirus disease 2019; ECMO, extracorporeal membrane oxygenation; FFP, fresh frozen plasma; HFNC, high-flow nasal cannula; INR, international normalized ratio; ME, morphine equivalent; OR, Odds ratio; PAH, pulmonary artery hypertension; Plt, platelets; PGD, primary graft dysfunction; PRA, panel reactive antibody; pRBCs, packed red blood cells; VA-ECMO, venoarterial-extracorporeal membrane oxygenation; WBC, white blood cell