1. Division of Cardiology, Kingston Health Science Center, Queen’s University, Kingston, Canada
2. Division of Cardiovascular Surgery, Kingston Health Science Center, Queen’s University, Kingston, Canada
3. Department of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, P.R., China
4. Department of Cardiology, Tianjin Institute of Cardiology Second Hospital of Tianjin Medical University, Tianjin, China