1. Institut Universitaire de Cardiologie et Pneumologie de Québec (J.S., K.C., S.S. P.M.), Laval University, Québec, Canada G1V 4G5
2. Department of Surgery (S.B., F.S.H., S.L., S.M., O.L., L.B., P.M.), Laval University, Québec, Canada G1V 4G5
3. Department of Surgery (J.G.K.), State University of New York Downstate Medical Center, Brooklyn, New York 11203