He is also an active participant and organizer of international collaborative projects. He has operated on over 5,000 adult heart patients between 1998 to present covering the entire range of cardio incidents including but not limited to coronary artery disease, heart valves, aneurysms, etc. Moreover, he has established a protocol for the heart team specialized on coronary artery bypass and implantation of mononuclear autologous pluripotent cells in patients suffering from ischemic heart failure. He was trained by Professor A M Calafiore and at present is Deputy Director of the 2nd Cardiac Surgery Clinic, Henry Dunant Hospital Center, Athens, Greece