Whooping cough—a continuing problem

In this editorial by N S Crowcroft and Joseph Britto (2002;324:1537-8), we inadvertently failed to include Dr Crowcroft's statement of his competing interests. The following statement should have appeared with the article: “NSC has participated in epidemiological studies jointly funded by the Public Health Laboratory Service and Aventis Pasteur and GlaxoSmithKline, which manufacture various pertussis vaccines and which may gain or lose from the conclusions of this editorial.”