TY  - RPRT
TI  - Pertussis--why we should immunise.
AU  - M Leaver
PY  - 1997
DO  - 10.1016/s1322-7696(08)60256-5
UR  - https://pubmed.ncbi.nlm.nih.gov/9423381/
ID  - 9423381
ER  -