Although the fibrinogen-to-albumin ratio (F/R ratio) has been used as an inflammation marker to predict clinical outcomes in patients with cardiovascular diseases. its association with the prognosis of patients with coronavirus disease 2019 (COVID-19) remains unclear. Electronic databases including EMBASE. MEDLINE. https://www.roneverhart.com/Liftmaster-CSL24UL-Slide-Gate-Opener/