Cognition and Vitamin D in Older African‐American Women– Physical performance and Osteoporosis prevention with vitamin D in older African Americans Trial and Dementia von Owusu, Jeanette E., Islam, Shahidul, Katumuluwa, Subhashini S., Stolberg, Alexandra R., Usera, Gianina L., Anwarullah, Ayesha A., Shieh, Albert, Dhaliwal, Ruban, Ragolia, Louis, Mikhail, Mageda B., Aloia, John F.

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