TY  - RPRT
TI  - Pneumococcal serotypes in the elderly.
AU  - James D Kellner
AU  - Lionell Mandell
PY  - 2005
DO  - 10.1086/432017
UR  - https://pubmed.ncbi.nlm.nih.gov/16028156/
ID  - 16028156
ER  -