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There was one of the following: Stenosis of greater than or equal to 70 percent reduction in diameter (or 50 percent reduction in cross-sectional area) in two major epicardial vessels or their major branches; Stenosis of greater than or equal to 50 percent reduction in diameter of the left main with a right dominant or co-dominant circulation, and no stenosis of greater than or equal to 70 percent reduction in diameter, or 50 percent reduction in cross-sectional area in the right coronary artery.
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