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Michael N Bates, Epidemiologist School of Public Health, University of California, Berkeley, Jackie Fawcett, Stuart Dickson, Rick Berezowski, Nick Garrett
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m_bates{at}uclink.berkeley.edu Michael N Bates, et al.
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We have found a small error in the Methods section of our paper, “Exposure of hospitality workers to environmental tobacco smoke”, recently published in Tobacco Control (2002; 11:125-9). The reference in the third paragraph, under the chemical analysis subheading should have referred to a 1/X2 (X-squared) weighting, not a 1/÷2 (chi-squared) weighting, as published. X was the concentration of cotinine in saliva samples. Our apologies for any confusion this has caused. | |||
