TY  - RPRT
TI  - Whooping-cough immunisation policy.
AU  - P M Jeavons
PY  - 1975
DO  - 10.1016/s0140-6736(75)80026-2
UR  - https://pubmed.ncbi.nlm.nih.gov/78167/
ID  - 78167
ER  -