TY - JOUR T1 - <em>Streptococcus pneumoniae</em> infection in children: vaccine implications JF - Canadian Medical Association Journal JO - CMAJ SP - 220 LP - 220 VL - 166 IS - 2 AU - Erica Weir Y1 - 2002/01/22 UR - http://www.cmaj.ca/content/166/2/220.abstract ER -