An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Guyatt GH, Akl EA, Crowther M, Gutterman DD, Schuünemann HJ; American College of Chest Physicians Antithrombotic Therapy and Prevention of Thrombosis Panel.Guyatt GH, et al. Among authors: crowther m.Chest. 2012 Feb;141(2 Suppl):7S-47S. doi: 10.1378/chest.1412S3.Chest. 2012.PMID: 22315257Free PMC article.No abstract available.