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OBJECTIVE To examine the association between smoking and risk of invasive breast cancer using quantitative measures of lifetime passive and active smoking exposure among postmenopausal women. DESIGN Prospective cohort study. SETTING 40 clinical centres in the United States. PARTICIPANTS 79,990 women aged 50-79 enrolled in the Women's Health Initiative(More)
Understanding the characteristics of Chinese American smokers with medical conditions and factors associated with their tobacco-use behaviors will guide effective cessation programs. In 2008, the authors described socio-demographic profiles of Chinese smokers with medical conditions treated during the period 2002-2006, documented their tobacco-use behaviors(More)
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