RT Journal Article SR Electronic T1 Management of asthma exacerbations JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 545 OP 546 DO 10.1136/thx.2004.023481 VO 59 IS 7 A1 W W Busse A1 R F Lemanske, Jr YR 2004 UL http://thorax.bmj.com/content/59/7/545.1.abstract AB