1 Département de médecine interne (Arshad), Memorial University of Newfoundland, St. John's, T.-N.-L.; Département de cardiologie (White, Kiamanesh, Shaw), University of Calgary, Calgary, Alb. oarshad@dal.ca.
2 Département de médecine interne (Arshad), Memorial University of Newfoundland, St. John's, T.-N.-L.; Département de cardiologie (White, Kiamanesh, Shaw), University of Calgary, Calgary, Alb.