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.
van Tongeren M, Gardiner K, Calvert I, Kromhout H, Harrington JM.van Tongeren M, et al.Occup Environ Med. 1997 Oct;54(10):714-9. doi: 10.1136/oem.54.10.714.Occup Environ Med. 1997.PMID: 9404318Free PMC article.
Barker RD, van Tongeren MJ, Harris JM, Gardiner K, Venables KM, Newman Taylor AJ.Barker RD, et al. Among authors: van tongeren mj.Occup Environ Med. 1998 Oct;55(10):684-91. doi: 10.1136/oem.55.10.684.Occup Environ Med. 1998.PMID: 9930090Free PMC article.
Barker RD, van Tongeren MJ, Harris JM, Gardiner K, Venables KM, Newman Taylor AJ.Barker RD, et al. Among authors: van tongeren mj.Eur Respir J. 2000 Apr;15(4):710-5. doi: 10.1034/j.1399-3003.2000.15d14.x.Eur Respir J. 2000.PMID: 10780763Free article.