Background: It is generally agreed that using a bilateral internal thoracic artery (BITA) composite graft improves long-term survival after coronary artery bypass grafting (CABG). Although the left internal thoracic artery (LITA)-based Y-composite graft is widely adopted, technical or anatomical difficulties necessitate complex configurations. We aimed to investigate whether BITA configuration impacts survival or patency in patients undergoing coronary revascularization.

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China is irrefutably a growing giant in thoracic surgery with unparalleled number of surgical cases and increasing academic researches given the rapidly accumulated data. The ESTS and the AME Publishing Group enable exciting opportunity to exchange ideas, discuss new clinical techniques, and foster rich experience in surgical education through valuable international observership award. This year's visiting scholarship allows collaboration between South Korea and China, two very close but disparate countries. This is a perspective paper discussing the current thoracic surgery training in South Korea and it attempts to outline objectives in visiting scholarships from a third-year resident's point of view.