RT Journal Article SR Electronic T1 Beta agonists in asthma--state of the art: report on a Royal Society of Medicine seminar. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 568 OP 569 DO 10.1136/thx.47.7.568 VO 47 IS 7 A1 Kuitert, L M YR 1992 UL http://thorax.bmj.com/content/47/7/568.abstract AB