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.
Astoul P, Bertault-Peres P, Durand A, Boutin C.Astoul P, et al. Among authors: boutin c.Rev Mal Respir. 1994;11(1):29-35.Rev Mal Respir. 1994.PMID: 8128091Clinical Trial.French.
Bérard H, Astoul P, Frenay C, Cuguillière A, Cho K, Boutin C.Bérard H, et al. Among authors: boutin c.Rev Mal Respir. 1999 Nov;16(5):829-31.Rev Mal Respir. 1999.PMID: 10612153French.