1. Department of Thrombosis and Hemostasis, Leiden University Medical Center, the Netherlands (S.J.V.d.W., F.A.K., M.V.H.).
2. Division Cardiology, Duke University Medical Center, Durham, NC (R.D.L.).
3. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY (J.A.).
4. Boehringer Ingelheim Pharmaceuticals, Ridgefield, CT (P.R.).
5. Boehringer Ingelheim International GmbH, Ingelheim and Biberach, Germany (J.v.R., S.G., A.E.).
6. Emergency Medicine, Thomas Jefferson University and Sidney Kimmel Medical College, Philadelphia, PA (C.V.P.).