RT Journal Article SR Electronic T1 Nebulised ipratropium combined with albuterol led to improved pulmonary function in children with severe asthma JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 137 OP 137 DO 10.1136/ebm.1997.2.137 VO 2 IS 5 YR 1997 UL http://ebm.bmj.com/content/2/5/137.abstract AB