Effect of angiotensin-converting enzyme inhibitor and angiotensin receptor blocker initiation on organ support–free days in patients hospitalized with COVID-19: a randomized clinic... by Lawler, PR, Derde, LPG, van de Veerdonk, FL, Beane, A, Estcourt, LJ, Haniffa, R, Nichol, AD, Pollock, KM