Intended for healthcare professionals

Research Article

Report from the PHLS Communicable Disease Surveillance Centre.

Br Med J (Clin Res Ed) 1987; 295 doi: https://doi.org/10.1136/bmj.295.6612.1545 (Published 12 December 1987) Cite this as: Br Med J (Clin Res Ed) 1987;295:1545