1. Department of Medicine McGill University Health Centre, McGill University Montreal Quebec Canada
2. Department of Medicine, Women and Infants Hospital Warren Alpert School of Brown University Providence RI USA
3. Department of Obstetrics and Gynecology Women & Infants Hospital, Warren Alpert Medical School of Brown University Providence RI USA
4. Department of Epidemiology Brown University School of Public Health Providence RI USA
5. Department of Medicine Brigham and Women's Cardiovascular Associates of Care New England, Harvard Medical School Boston MA USA
6. Department of Medicine Rhode Island Hospital, Warren Alpert Medical School of Brown University Providence RI USA