Intended for healthcare professionals

Letter

Pertussis vaccination and pseudo whooping cough.

Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6279.1871-a (Published 06 June 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:1871