RT Journal Article
SR Electronic
T1 Introduction
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 538
OP 539
DO 10.1136/thx.54.6.538
VO 54
IS 6
A2 W F Holmes
A2 J Macfarlane
A1 W F Holmes
A1 John Macfarlane
YR 1999
UL http://thorax.bmj.com/content/54/6/538.abstract
AB