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Figure 2 Quality of life (MOS 36 Short-Form Health Survey) during 12 months’ follow-up. Summary physical component scale (PCS) and summary mental component scale (MCS) in the medical treatment (MT) group and transmyocardial revascularization with CO₂ laser (TMR) group during 12 months follow-up. Higher values indicate improved quality of life. *Statistical significance between groups, comparing the changes between the groups from baseline to 3, 6 and 12 months, respectively.