RT Journal Article SR Electronic T1 Switching swine for simulators: At what cost? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 759 OP 760 DO 10.1503/cmaj.081400 VO 179 IS 8 A1 Roger Collier YR 2008 UL http://www.cmaj.ca/content/179/8/759.abstract