@article{doi:10.1001/2012.jama.11153,
author = {Cram P and Lu X and Kates SL and Singh JA and Li Y and Wolf BR},
title = {TOtal knee arthroplasty volume, utilization, and outcomes among medicare beneficiaries, 1991-2010},
journal = {JAMA},
volume = {308},
number = {12},
pages = {1227-1236},
year = {2012},
doi = {10.1001/2012.jama.11153},
URL = { + http://dx.doi.org/10.1001/2012.jama.11153},
eprint = {/data/Journals/JAMA/24967/joc120077_1227_1236.pdf}
}