TY  - RPRT
TI  - Vaccination against whooping-cough. Efficacy versus risks.
AU  - G T Stewart
PY  - 1977
DO  - 10.1016/s0140-6736(77)91028-5
UR  - https://pubmed.ncbi.nlm.nih.gov/64761/
ID  - 64761
ER  -