Report of Low Incidence of Thrombosis with Early Prophylaxis in Hospitalized Patients with COVID-19 from Two Saudi Tertiary Centers oleh Tarek Owaidah MD, FRCPA, Khalid Maghrabi MD, Feras Alfraih MD, Alfadil Haroon MD, Khawar Siddiqui MSc, Randa Alnounou MD, Hadeel AlOtair MD, Fatmah S Alqahtany MD, Mohannad Maghrabi MD, Mustafa Owaidah MD, Khalid AlSaleh MBBS, MRCP, FRCPC, FACP, MSc, CIP