TY  - RPRT
TI  - Pertussis vaccine: reasonable doubt?
AU  - G F Grady
AU  - L H Wetterlow
PY  - 1978
DO  - 10.1056/nejm197804272981711
UR  - https://pubmed.ncbi.nlm.nih.gov/642979/
ID  - 642979
ER  -