Mohammed AH ALZobaidy, Ali H. AlbuRghaif, Hany A. Alhasany, Mena Akeel Naji, “Angiotensin-Converting Enzyme Inhibitors May Increase Risk of Severe COVID-19 Infection”, Annals of RSCB, vol. 25, no. 6, pp. 17843–17849, Jul. 2021.