@article{Verbrugge1997,
author = {Verbrugge, L.M. and Rennert, C. and Madans, J.H.},
title= {The great efficacy of personal and equipment assistance in reducing disability},
year = {1997},
doi = {10.2105/AJPH.87.3.384},
journal = {American Journal of Public Health},
volume = {87},
number = {3},
pages = {384--392},
}