@article{Clark1998,
author = {Clark, D.O. and Stump, T.E. and Hui, S.L. and Wolinsky, F.D.},
title= {Predictors of mobility and basic ADL difficulty among adults aged 70 years and older},
year = {1998},
doi = {10.1177/089826439801000402},
journal = {Journal of Aging and Health},
volume = {10},
number = {4},
pages = {422--440},
}