RT Journal Article
SR Electronic
T1 AUTHOR'S REPLY
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 776
OP 776
DO 10.1136/thx.48.7.776-a
VO 48
IS 7
A1 BJ Lipworth
YR 1993
UL http://thorax.bmj.com/content/48/7/776.2.abstract
AB