RT Journal Article SR Electronic T1 Asthma drug zafirlukast (Accolate): serious hepatic events JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1668 OP 1668 DO 10.1503/cmaj.1040720 VO 170 IS 11 A1 Eric Wooltorton YR 2004 UL http://www.cmaj.ca/content/170/11/1668.abstract