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.
Stafford CM, Herndier B, Yi ES, Weidner N, Harrell JH 2nd.Stafford CM, et al. Among authors: harrell jh 2nd.Respiration. 2004 Sep-Oct;71(5):529-32. doi: 10.1159/000080641.Respiration. 2004.PMID: 15467334
Macaulay SE, vanSonnenberg E, Casola G, Harrell JH 2nd.Macaulay SE, et al. Among authors: harrell jh 2nd.AJR Am J Roentgenol. 1990 Dec;155(6):1183-4. doi: 10.2214/ajr.155.6.2122663.AJR Am J Roentgenol. 1990.PMID: 2122663No abstract available.