Vitamin K Status and Lower Extremity Function in Older Adults: The Health Aging and Body Composition Study. - Shea, M. Kyla; Loeser, Richard F.; Fang-Chi Hsu; Booth, Sarah L.; Nevitt, Michael; Simonsick, Eleanor M.; Strotmeyer, Elsa S.; Vermeer, Cees; Kritchevsky, Stephen B.; Hsu, Fang-Chi; Health ABC Study (Journals of Gerontology Series A: Biological Sciences & Medical Sciences, 2016)