@article{Card2008,
author = {Card, D. and Dobkin, C. and Maestas, N.},
title= {The impact of nearly universal insurance coverage on health care utilization: Evidence from Medicare},
year = {2008},
doi = {10.1257/aer.98.5.2242},
volume = {98},
number = {5},
pages = {2242--2258},
}