TY  - RPRT
TI  - The expanded programme on immunization calendar in Poland.
AU  - J Galimska
PY  - 2000
DO  - 10.1016/s0264-410x(99)00461-2
UR  - https://pubmed.ncbi.nlm.nih.gov/10683544/
ID  - 10683544
ER  -