1. School of Medicine, Faculty of Medicine and Health Sciences, Royal College of Surgeons in Ireland, Dublin (S.M.).
2. Population Health Research Institute, Hamilton, Canada (S.M., I.H.J., E.P.B.-C., G.R.M., J.W.E., R.P.W.).
3. Thrombosis and Atherosclerosis Research Institute, Hamilton, Canada (I.H.J., J.W.E.).
4. Department of Surgery, Department of Clinical Epidemiology and Biostatistics (E.P.B.-C., G.R.M., R.P.W.), McMaster University, Hamilton, Canada.
5. Department of Medicine (E.P.B.-C., J.W.E.), McMaster University, Hamilton, Canada.
6. Division of Cardiac Surgery (I.H.J., R.P.W.), McMaster University, Hamilton, Canada.
7. Division of Vascular Surgery (G.R.M.), McMaster University, Hamilton, Canada.