RT Journal Article SR Electronic T1 Proceedings of the British Thoracic Society. 6-7 December 1984, London. Abstracts. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 209 OP 240 DO 10.1136/thx.40.3.209 VO 40 IS 3 YR 1985 UL http://thorax.bmj.com/content/40/3/209.abstract AB