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.
Bray DH, Squire SB, Bagdades E, Mulvenna PM, Johnson MA, Poulter LW.Bray DH, et al. Among authors: johnson ma.Eur Respir J. 1992 May;5(5):545-52.Eur Respir J. 1992.PMID: 1351852
Squire SB, Elford J, Bor R, Tilsed G, Salt H, Bagdades EK, Janossy G, Griffiths PD, Johnson MA.Squire SB, et al. Among authors: johnson ma.BMJ. 1991 Jun 8;302(6789):1383-6. doi: 10.1136/bmj.302.6789.1383.BMJ. 1991.PMID: 1676319Free PMC article.
Pillay D, Lipman MC, Lee CA, Johnson MA, Griffiths PD, McLaughlin JE.Pillay D, et al. Among authors: johnson ma.AIDS. 1993 Jul;7(7):969-74. doi: 10.1097/00002030-199307000-00010.AIDS. 1993.PMID: 8395189
Lipman MC, Johnson MA, Poulter LW.Lipman MC, et al. Among authors: johnson ma.AIDS. 1997 May;11(6):765-72. doi: 10.1097/00002030-199706000-00010.AIDS. 1997.PMID: 9143609