“…Most studies included in the meta-analysis were retrospective 20 , 21 , 33 , 44 or observational 4 , 6 , 26 , 37 , 61 , 62 , 63 and were conducted in China, 4 , 8 , 10 , 23 , 24 , 25 , 28 , 31 , 32 , 35 , 39 , 41 , 45 , 48 , 55 , 58 , 59 , 60 , 62 , 64 , 65 , 66 Europe, 5 , 7 , 9 , 18 , 19 , 22 , 30 , 34 , 40 , 43 , 46 , 47 , 51 , 52 , 53 , 56 , 57 or North America. 6 , 20 , 49 , 50 , 54 Two studies 22 , 38 included a subgroup of patients receiving ACEIs/ARBs that were explicitly discontinued during hospital admission.…”