TY - JOUR T1 - Efficacy of pneumococcal polysaccharide vaccine JF - Canadian Medical Association Journal JO - CMAJ SP - 1134 LP - 1135 DO - 10.1503/cmaj.1090018 VL - 180 IS - 11 AU - Pippa Scott AU - Anke Huss AU - Andreas E. Stuck AU - Caroline Trotter AU - Matthias Egger Y1 - 2009/05/26 UR - http://www.cmaj.ca/content/180/11/1134.2.abstract ER -