RT Journal Article SR Electronic T1 Asthma admissions, smoking bans and administrative databases JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP thoraxjnl-2013-204183 DO 10.1136/thoraxjnl-2013-204183 A1 Brian D Kent A1 Stephen J Lane A1 Edward D Moloney YR 2013 UL http://thorax.bmj.com/content/early/2013/08/26/thoraxjnl-2013-204183.abstract AB