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for the functional assessment of nonobstructive coronary stenoses: comparison with fractional flow reserve. Am Heart J. 2013;166:1010–1018. Zafar H, Ullah I, Dinneen K, Matiullah S, Hanley A, Leahy MJ, Sharif F. Evaluation of hemodynamically severe coronary stenosis as determined by fractional flow reserve with frequency domain optical ... ................
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