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.
Wagenaar M, Vos P, Heijdra Y, Teppema L, Folgering H.Wagenaar M, et al. Among authors: heijdra y.Chest. 2003 May;123(5):1450-9. doi: 10.1378/chest.123.5.1450.Chest. 2003.PMID: 12740260Clinical Trial.
Wagenaar M, Vos PJ, Heijdra YF, Teppema LJ, Folgering HT.Wagenaar M, et al. Among authors: heijdra yf.Eur Respir J. 2002 Nov;20(5):1130-7. doi: 10.1183/09031936.02.00016402.Eur Respir J. 2002.PMID: 12449165Free article.Clinical Trial.
Heijdra YF, van Spiegel PI, Bootsma GP, van den Berkmortel FP, Wollersheim H.Heijdra YF, et al.Ned Tijdschr Geneeskd. 2000 Nov 4;144(45):2138-42.Ned Tijdschr Geneeskd. 2000.PMID: 11086486Review.Dutch.
Albers M, Schermer T, Heijdra Y, Molema J, Akkermans R, van Weel C.Albers M, et al. Among authors: heijdra y.Thorax. 2008 Mar;63(3):201-7. doi: 10.1136/thx.2006.068007. Epub 2007 Sep 28.Thorax. 2008.PMID: 17905823
Nizet TA, van den Elshout FJ, Heijdra YF, van de Ven MJ, Mulder PG, Folgering HT.Nizet TA, et al.Chest. 2005 Jun;127(6):1904-10. doi: 10.1378/chest.127.6.1904.Chest. 2005.PMID: 15947301