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Reviewed by Melinda Ratini on October 30, 2017
Mayo Clinic: "Mayo Clinic Q and A: Bone Health as You Age," "Calcium and calcium supplements: Achieving the right balance."<br><br>NIH Office of Dietary Supplements: "Calcium."<br><br>Go Ask Alice: "Foods that minimize menstrual cramps?"<br><br>Harvard Health Publications: "What you need to know about calcium."
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