@article{Johnson1993,
author = {Johnson, R.J. and F.D., Wolinsky},
title= {The structure of health status among older adults: Disease, disability, functional limitation, and perceived health},
year = {1993},
doi = {10.2307/2137238},
journal = {Journal of Health and Social Behavior},
volume = {34},
number = {2},
pages = {105‒121},
}