OPCAB Selection Bias To the Editor

DOI:€10.1016/S0003-4975(01)02484-5 Ann Thorac Surg 2001;71:1751 Rebecca J Petersen Vibhu R Kshettry, Thomas F Flavin, Robert W Emery, Demetre M Nicoloff andOPCAB selection bias: Reply http://ats.ctsnetjournals.org/cgi/content/full/71/5/1751-a on the World Wide Web at: The online version of this article, along with updated information and services, is located