1. Department of Medicine, Université de Montréal, ECOGENE-21 and Lipid Clinic, Chicoutimi Hospital, Saguenay, Quebec, Canada.
2. Department of Medicine, Université de Sherbrooke, Sherbrooke, Quebec, Canada.
3. Centers for Disease Control and Prevention, Atlanta, Georgia.
4. Department of Biochemistry, Université de Sherbrooke, Sherbrooke, Quebec, Canada.