University of Ottawa and Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (F.K., K.T., B.H.). Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (T.T., D.A.). Ottawa Hospital Research Institute, University of Ottawa, and The Ottawa Hospital, Ottawa, Ontario, Canada (M.K., P.S.W., G.L.). McMaster University and Thrombosis and Atherosclerosis Research Institute, Hamilton, Ontario, Canada (C.K., J.I.W.). Amsterdam University Medical Center, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands (H.R.B.). University of Oklahoma Health Sciences Center, Hudson College of Public Health, Oklahoma City, Oklahoma (G.E.R.). University of Insubria, Varese, Italy (W.A.). Brest University Hospital, Brest, France (F.C.). Arianna Foundation on Anticoagulation, Bologna, Italy (P.P., G.P., C.L.). Medical University of Vienna, Vienna, Austria (P.A.K., S.E., L.E.). University of Perugia, Perugia, Italy (C.B., G.A., M.C.V.). Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands (G.G., T.T.). Sant'Orsola-Malpighi University Hospital, Bologna, Italy (B.C.). University of Pisa, Pisa, Italy (L.M., A.P.). University of Palermo, Palermo, Italy (S.S.). University of Bristol, Bristol, United Kingdom (C.A.B.). McMaster University, Hamilton, Ontario, Canada (S.P.). Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (R.M.). Bayer, Wuppertal, Germany (A.W.L., M.G.). Daiichi Sankyo, Basking Ridge, New Jersey (M.A.G.). University of Ottawa, Ottawa Hospital Research Institute, and The Ottawa Hospital, Ottawa, Ontario, Canada (D.A.F.). Ottawa Hospital Research Institute, Ottawa, Ontario, and McGill University, Montreal, Quebec, Canada (M.A.R.).