@article{Melzer2005,
author = {David Melzer and Elizabeth Gardener and Jack M. Guralnik},
title = {Mobility disability in the middle-aged: cross-sectional associations in the English Longitudinal Study of Ageing},
journal = {Age and Ageing},
year = {2005},
month = {Nov},
volume = {34},
number = {6},
pages = {594-602},
url = {http://ageing.oxfordjournals.org/cgi/content/abstract/34/6/594},
}