TY  - RPRT
TI  - Poliomyelitis immunization in 1957.
AU  - J R PAUL
PY  - 1957
DO  - 10.7326/0003-4819-46-6-1214
UR  - https://pubmed.ncbi.nlm.nih.gov/13435671/
ID  - 13435671
ER  -