TY  - RPRT
TI  - Immunization programs and their costs.
AU  - L Brenzel
AU  - P Claquin
PY  - 1994
DO  - 10.1016/0277-9536(94)90095-7
UR  - https://pubmed.ncbi.nlm.nih.gov/7973852/
ID  - 7973852
ER  -