RT Journal Article
SR Electronic
T1 AUTHORS' REPLY
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 583
OP 583
DO 10.1136/thx.48.5.583-a
VO 48
IS 5
A1 N C Barnes
A1 C D Sheldon
YR 1993
UL http://thorax.bmj.com/content/48/5/583.2.abstract
AB