| Robert Wellmon Changes in dual-task voice reaction time among elders who use assistive devicesRobert Wellmon Institute for Physical Therapy Education, Widener University, One University Place, Chester, PA 19013, USA J Geriatr Phys Ther 29:74-80. 2006 Does the attentional demands of walking differ for older men and women living independently in the community?Robert Wellmon Institute for Physical Therapy Education, Widener University, One University Place, Chester, Pennsylvania 19013, USA J Geriatr Phys Ther 35:55-61. 2012
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