The effects of an active-assisted stretching program on functional performance in elderly persons: A pilot study

by Damian C Stanziano, Bernard A Roos, Arlette C Perry, Shenghan Lai, et al. 
Published 2009

Walker use, but not falls, is associated with lower physical functioning and health of residents in an assisted-living environment

by Daniel A Andersen, Bernard A Roos, Damian C Stanziano, Natasha M Gonzalez, Joseph F Signorile
Published 2007