TY  - RPRT
TI  - Pneumococcal vaccines.
AU  - J D Campbell
AU  - M B Rennels
PY  - 1999
DO  - 10.1358/dot.1999.35.6.544932
UR  - https://pubmed.ncbi.nlm.nih.gov/12973392/
ID  - 12973392
ER  -