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.
Pendleton N, Cheesbrough JS, Walshaw MJ, Hind CR.Pendleton N, et al. Among authors: walshaw mj.Thorax. 1991 Apr;46(4):257-8. doi: 10.1136/thx.46.4.257.Thorax. 1991.PMID: 2038734Free PMC article.
Carroll N, Walshaw MJ, Evans CC, Hind CR.Carroll N, et al. Among authors: walshaw mj.Respir Med. 1990 May;84(3):199-201. doi: 10.1016/s0954-6111(08)80034-0.Respir Med. 1990.PMID: 2218003
Lim R, Walshaw MJ, Saltissi S, Hind CR.Lim R, et al. Among authors: walshaw mj.Postgrad Med J. 1989 Jul;65(765):449-52. doi: 10.1136/pgmj.65.765.449.Postgrad Med J. 1989.PMID: 2602234Free PMC article.