Cigarette smoking and postmenopausal breast cancer risk in a prospective cohort.

Br J Cancer · 2014 · PMC4007228 · PMID 24642621

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a positive trendno p-value reported

Some ( Reynolds et al , 2004 ; Gram et al , 2005 ; Cui et al , 2006 ; Xue et al , 2011 ) but not all ( Al-Delaimy et al , 2004 ; Luo et al , 2011b ; Gaudet et al , 2013 ) prior prospective studies have observed a positive trend between number of cigarettes and risk.

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