TY  - RPRT
TI  - Pneumococcal immunisation and the healthy elderly.
AU  - G A Bruyn
PY  - 1992
DO  - 10.1016/0140-6736(92)92613-k
UR  - https://pubmed.ncbi.nlm.nih.gov/1360130/
ID  - 1360130
ER  -