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. 2021 Aug 31;5(4):pkab072. doi: 10.1093/jncics/pkab072

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© The Author(s) 2021. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Consort diagram of participants in the Women’s Health Initiative randomized trial of calcium plus vitamin D supplementation trial showing numbers included in the analysis. ^aCases ascertained between the enrollment in the Women’s Health Initiative study and the enrollment in the calcium plus vitamin D trial. ^bAmong women free of DCIS of the breast and invasive breast cancer. BC = invasive breast cancer; CaD = calcium plus vitamin D intervention arm; DCIS = ductal carcinoma in situ of the breast; DM = dietary modification; HT = hormone therapy.