RT Journal Article SR Electronic T1 Glucocorticoids in the treatment of croup: barking up the right tree JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1121 OP 1122 VO 159 IS 9 A1 Klassen, T. P. YR 1998 UL http://www.cmaj.ca/content/159/9/1121.abstract AB