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A prospective randomized comparison of the Medtronic Advantage Supra and St Jude Medical Regent mechanical heart valves in the aortic position: is there an additional benefit of supra-annular valve positioning?
Guenzinger R, Eichinger WB, Hettich I, Bleiziffer S, Ruzicka D, Bauernschmitt R, Lange R. Guenzinger R, et al. J Thorac Cardiovasc Surg. 2008 Aug;136(2):462-71. doi: 10.1016/j.jtcvs.2007.12.018. Epub 2008 May 12. J Thorac Cardiovasc Surg. 2008. PMID: 18692658 Free article. Clinical Trial.
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