PT - JOURNAL ARTICLE AU - James D. Kellner AU - Deirdre L. Church AU - Judy MacDonald AU - Gregory J. Tyrrell AU - David Scheifele TI - Progress in the prevention of pneumococcal infection AID - 10.1503/cmaj.051150 DP - 2005 Nov 08 TA - Canadian Medical Association Journal PG - 1149--1151 VI - 173 IP - 10 4099 - http://www.cmaj.ca/content/173/10/1149.short 4100 - http://www.cmaj.ca/content/173/10/1149.full SO - CMAJ2005 Nov 08; 173