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.
Tylén U, Boijsen M, Ekberg-Jansson A, Bake B, Löfdahl CG.Tylén U, et al.Respir Med. 2000 Jan;94(1):38-43. doi: 10.1053/rmed.1999.0690.Respir Med. 2000.PMID: 10714477Free article.
Ekberg-Jansson A, Amin K, Bake B, Rosengren A, Tylén U, Venge P, Löfdahl CG.Ekberg-Jansson A, et al. Among authors: tylen u.Respir Med. 2005 Jan;99(1):75-83. doi: 10.1016/j.rmed.2004.05.013.Respir Med. 2005.PMID: 15672853Free article.