1 Section de cardiologie, Département de médecine interne, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Man. m.a.ali@doctors.org.uk.
2 Section de cardiologie, Département de médecine interne, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Man.