TY  - RPRT
TI  - Pneumococcal vaccine: current status.
AU  - P J Torzillo
PY  - 1993
DO  - 10.1111/j.1445-5994.1993.tb01734.x
UR  - https://pubmed.ncbi.nlm.nih.gov/8352705/
ID  - 8352705
ER  -