William_Thornton_Mustard--John_James_Richard_Macleod

William Thornton Mustard (August 8, 1914 – December 11, 1987) was a Canadian physician and cardiac surgeon. In 1949, he was one of the first to perform open-heart surgery using a mechanical heart pump and biological lung on a dog at the Banting Institute. He developed two operations named for him: the "Mustard operation" in orthopedics used to help hip use in people with polio and the "Mustard cardiovascular procedure" used to help correct heart problems in "blue babies," which has saved thousands of children worldwide. He was also the first to treat ALCAPA with a left carotid artery end to end anastamosis in 1953.