TY - JOUR T1 - Upper respiratory tract infections in children — Why do parents seek medical consultation? JF - Canadian Medical Association Journal JO - CMAJ SP - 43 LP - 43 VL - 168 IS - 1 AU - Elaine Wang Y1 - 2003/01/07 UR - http://www.cmaj.ca/content/168/1/43.abstract ER -