Table 1.

Study groups

Group	Intervention
Endo-CABG, surgical group (minimal invasive cardiac surgery group)	Procedure/surgery: Endo-CABG minimal invasive cardiac intervention Other names: minimal invasive coronary artery bypass grafting
PCI, surgical control group (comparative minimal invasive procedure)	Procedure/surgery: PCI stenting procedure Other names: percutaneous coronary intervention
Healthy volunteer, control group (to exclude learning effect or natural variation in neurological testing)	No intervention This group will be age matched and sex matched

Endo-CABG, Endoscopic coronary artery bypass grafting; PCI, percutaneous coronary intervention.