RT Journal Article SR Electronic T1 A double-blind trial of disodium cromoglycate (Intal) in the treatment of bronchial asthma JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 827 OP 831 VO 105 IS 8 A1 M. Chan-Yeung A1 J. Morton A1 S. Grzybowski YR 1971 UL http://www.cmaj.ca/content/105/8/827.abstract