RT Journal Article SR Electronic T1 Subsittution of inhaled beclomethasone dipropionate for ingested prednisone in steroid-dependent asthmatics JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 867 OP 871 VO 116 IS 8 A1 A. T. Kerigan A1 S. O. Pugsley A1 D. W. Cockcroft A1 F. E. Hargreave YR 1977 UL http://www.cmaj.ca/content/116/8/867.abstract