RT Journal Article
SR Electronic
T1 Respiratory Care
JF Thorax
JO Thorax
FD BMJ Publishing Group Ltd and British Thoracic Society
SP 69
OP 69
DO 10.1136/thx.41.1.69-b
VO 41
IS 1
A1 CS
YR 1986
UL http://thorax.bmj.com/content/41/1/69.3.abstract
AB