Aranzazu Ceballos, A.D. et al. 2023. Analysis of heterogeneity in cardiology systematic reviews published be-tween 2000-2005 and 2011-2016. Medicina UPB. 42, 1 (Feb. 2023), 37–48. DOI:https://doi.org/10.18566/medupb.v42n1.a06.