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.
Turner MO, Mayo JR, Müller NL, Schulzer M, FitzGerald JM.Turner MO, et al. Among authors: muller nl.Can Respir J. 2006 Sep;13(6):311-6. doi: 10.1155/2006/859870.Can Respir J. 2006.PMID: 16983446Free PMC article.
Mayo JR, MacKay A, Müller NL.Mayo JR, et al. Among authors: muller nl.AJR Am J Roentgenol. 1992 Nov;159(5):951-6. doi: 10.2214/ajr.159.5.1414805.AJR Am J Roentgenol. 1992.PMID: 1414805