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This article has been retracted at the request of the Editor-in-Chief and Author.
This article is a duplicate of a paper that has already been published in the Journal of Thrombosis and Thrombolysis, 23 (2007) 163–71. http://dx.doi.org/10.1007/s11239-006-9029-0. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper is not under consideration for publication elsewhere. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.