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Published online 16 May 2003 | Nature | doi:10.1038/news030512-15

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All in a puff over passive smoking

Anti-anti-smoking study provokes furore among researchers.

Public-health experts are up in arms over a controversial new study claiming that passive smoking may not be a killer.

The 39-year analysis, involving some 118,000 subjects, finds that smokers' spouses were no more likely than those in smoke-free households to die from lung cancer and heart disease1.

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