Accepted for Publication: May 4, 1015.
Published Online: July 13, 2015. doi:10.1001/jamainternmed.2015.3184.
Study concept and design: Ageno, Riva, Schulman, Dentali.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Ageno, Riva, Schulman, Beyer-Westendorf, Dentali.
Critical revision of the manuscript for important intellectual content: Bang, Senzolo, Grandone, Pasca, Di Minno, Duce, Malato, Santoro, Poli, Verhamme, Martinelli, Kamphuisen, Oh, D’Amico, Becattini, De Stefano, Vidili, Vaccarino, Nardo, Di Nisio.
Statistical analysis: Dentali.
Obtained funding: Schulman.
Administrative, technical, or material support: Ageno, Riva.
Final approval of the manuscript: Poli.
Conflict of Interest Disclosures: None reported.
Funding/Support: The study and registry were supported by research grant GA90022U from Pfizer Canada, promoted through the International Society on Thrombosis and Hemostasis.
Role of the Funder/Sponsor: The funding organizations had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This work was presented at the 2014 meeting of the American Society of Hematology; December 8, 2014; San Francisco, California.