RT Journal Article SR Electronic T1 Comparative studies of inhaled corticosteroids in asthma JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 579 OP 580 DO 10.1183/09031936.01.17405790 VO 17 IS 4 A1 R. Beasley A1 P.J. Sterk A1 H.A.M. Kerstjens A1 M. Decramer YR 2001 UL http://erj.ersjournals.com/content/17/4/579.abstract AB