More Groups
Fewer Groups
More People
Fewer People
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Brown, K. T. Journal of Vascular and Interventional Radiology (2004)
Melendez, J. A.; Barrera, R. Annals of Thoracic Surgery (1998)
McDowall, R. H.; Scher, C. S.; Barst, S. M. Journal of Clinical Anesthesia (1995)