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.
Dosman JA, Cotton DJ, Graham BL, Hall DL, Li R, Froh F, Barnett GD.Dosman JA, et al. Among authors: graham bl.Chest. 1981 Jan;79(1):6-11. doi: 10.1378/chest.79.1.6.Chest. 1981.PMID: 7449508
Dosman JA, Graham BL, Hall D, Van Loon P, Bhasin P, Froh F.Dosman JA, et al. Among authors: graham bl.J Occup Med. 1987 Jan;29(1):38-43.J Occup Med. 1987.PMID: 3819883