TY  - RPRT
TI  - Vaccine interchangeability.
AU  - David P Greenberg
AU  - Sandor Feldman
PY  - 2003
DO  - 10.1177/000992280304200201
UR  - https://pubmed.ncbi.nlm.nih.gov/12659381/
ID  - 12659381
ER  -