Predicting major bleeding during extended anticoagulation for unprovoked or weakly provoked venous thromboembolism

Philip S. Wells, Tobias Tritschler, Faizan Khan, David R. Anderson, Susan R. Kahn, Alejandro Lazo-Langner, Marc Carrier, Grégoire Le Gal, Lana A. Castellucci, Vinay Shah, Scott Kaatz, Clive Kearon, Susan Solymoss, Russell Zide, Sam Schulman, Isabelle Chagnon, Ranjeeta Mallick, Marc A. Rodger, Michael J. Kovacs