A higher principle is at stake than simply freedom of speech

doi:10.1136/bmj.312.7033.773b

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David F Marks

Editor Journal of Health Psychology, Health Research Centre, Middlesex University, Enfield, Middlesex EN3 4SF

EDITOR,—John Roberts and Richard Smith suggest that the American Journal of Respiratory and Critical Care Medicine and the American Journal of Respiratory Cell and Molecular Biology should reverse their recent ban on research sponsored by the tobacco industry.1 They suggest that if some studies are systematically suppressed then we will reach false conclusions: “Because peer review cannot guarantee the validity of a study and because bias operates very subtly, many journals, including this one, print authors' funding sources alongside papers. By …