%0 Journal Article %T Factors Associated With Loss of Usual Source of Care Among Older Adults %A Cynthia Boyd %A Jennifer L. Wolff %A Orla Sheehan %A Stephanie K. Nothelle %J - %@ 1544-1717 %D 2018 %K aging continuity of care access to care %U http://www.annfammed.org/content/16/6/538.abstract