Letter
Pertussis immunisation and serious acute neurological illness in children.
Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6279.1870-b (Published 06 June 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:1870
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