RT Journal Article
SR Electronic
T1 Abstracts
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 277
OP 284
DO 10.1136/thx.7.3.277
VO 7
IS 3
YR 1952
UL http://thorax.bmj.com/content/7/3/277.abstract
AB