PMID 21431872 Free PMC article
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Cai Q, Shu XO, Jin F, Dai Q, Wen W, Cheng JR, Gao YT, Zheng W 2003 Cancer Epidemiol Biomarkers Prev 12 853 9 Haplotype analyses of CYP19A1 gene variants and breast cancer risk results from the Shanghai Breast Cancer Study