RT Journal Article SR Electronic T1 Etiology of acute otitis media in infants and children JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 159 OP 163 VO 94 IS 4 A1 Laxdal, O. E. A1 Blake, R. M. A1 Cartmill, T. A1 Robertson, H. E. YR 1966 UL http://www.cmaj.ca/content/94/4/159.abstract