@article{Wolff2018,
author = {Wolff, J.L. and Mulcahy, J. and Huang, J. and Roth, D.L. and Covinsky, K. and Kasper, J.D.},
title= {Family caregivers of older adults, 1999–2015: Trends in characteristics, circumstances, and role-related appraisal},
year = {2018},
doi = {10.1093/geront/gnx093},
volume = {58},
number = {6},
pages = {1021--1032},
}