Aranzazu Ceballos AD, Marín Cárdenas JS, Gallego González D, Donado Gómez JH. Analysis of heterogeneity in cardiology systematic reviews published be-tween 2000-2005 and 2011-2016. Med UPB. 2023;42(1):37-48. doi:10.18566/medupb.v42n1.a06