Repeat target vessel revascularization. RR <1 is in favor of MIDCAB. Legend: Forest plots, short-term, mid-term and long-term cardiac mortality in RCTs and cohort studies. CI: confidence interval, MIDCAB: minimally invasive direct coronary artery bypass, PCI: percutaneous coronary interventions, RCT: randomized controlled trial, RR: risk ratio, rTVR: repeat vessel revascularization.