© 2004 by Oxford University Press
© 2004 Oxford University Press
CORRESPONDENCE |
Re: Active Smoking, Household Passive Smoking, and Breast Cancer: Evidence From the California Teachers Study
Correspondence to: Kenneth C. Johnson, PhD, Surveillance and Risk Assessment Division, Centre for Chronic Disease Prevention and Control, Population and Public Health Branch, Health Canada, 120 Colonnade Rd., PL 6702A, Ottawa, ON, Canada K1A 0K9 (e-mail: ken_lcdc_johnson@hc-sc.gc.ca)
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Reynolds et al. are to be congratulated on a careful and thorough prospective study of active smoking and breast cancer (1). They found higher breast cancer risks among women who smoked for 5 or more years pre-partum (odds ratio [OR] = 1.13, 95% confidence interval [CI] = 1.00 to 1.28) or smoked more
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J Natl Cancer Inst 2004 96: 1042-1043.