Author Contributions: Dr Chen had full access to all of the data in the study and Drs Nanda and D’Amico take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Nanda, D’Amico.
Acquisition of data: Braccioforte, Moran.
Analysis and interpretation of data: Nanda, Chen, D’Amico.
Drafting of the manuscript: Nanda, D’Amico.
Critical revision of the manuscript for important intellectual content: Nanda, Chen, Braccioforte, Moran, D’Amico.
Statistical analysis: Nanda, Chen, D’Amico.
Administrative, technical, or material support: Braccioforte, Moran, D’Amico.
Study supervision: D’Amico.
Financial Disclosures: None reported.
Additional Contributions: We thank Samuel Z. Goldhaber, MD, Department of Medicine, Harvard Medical School, and Department of Cardiology, Anticoagulation Service and Venous Thromboembolism Research Group, Brigham and Women's Hospital and Marian J. Loffredo, RN, OCN, CCN, Dana-Farber Cancer Institute–Brigham and Women's Hospital, for their helpful discussions and constructive feedback during the revision process. Neither received compensation for their work.