This article has been retracted: please see Elsevier Policy on Article Withdrawal ( http://www.elsevier.com/locate/withdrawalpolicy ).

This article has been retracted at the request of the Editor-in-Chief and Authors.

The article contains inaccurate data. It was found that patient data files were matched incorrectly in 33 cases to the corresponding Quantitative Coronary Angiography results; therefore the published data is inaccurate. As such, the manuscript should not be available for citation and apologies are offered to readers of the journal.