1 Toronto East General Hospital, University of Toronto, Toronto, Ontario, Canada Women's College Hospital, University of Toronto, Toronto, Ontario, Canada Division of Cardiology, University of Toronto, Toronto, Ontario, Canada Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
3 Women's College Hospital, University of Toronto, Toronto, Ontario, Canada Division of Cardiology, University of Toronto, Toronto, Ontario, Canada Department of Medicine, University of Toronto, Toronto, Ontario, Canada.