TY  - RPRT
TI  - Epidemiological evaluation of immunisation and other factors in the control of whooping-cough.
AU  - W R Bassili
AU  - G T Stewart
PY  - 1976
DO  - 10.1016/s0140-6736(76)91488-4
UR  - https://pubmed.ncbi.nlm.nih.gov/55731/
ID  - 55731
ER  -