Breast Cancer Research

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Serum 25-hydroxyvitamin D concentrations and postmenopausal breast cancer risk: a nested case control study in the Cancer Prevention Study-II Nutrition Cohort

Marjorie L McCullough*, Victoria L Stevens, Roshni Patel, Eric J Jacobs, Elizabeth B Bain, Ronald L Horst, Susan M Gapstur, Michael J Thun and Eugenia E Calle

Breast Cancer Research 2009, 11:R64 doi:10.1186/bcr2356

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