@article{doi:10.1001/2013.jamainternmed.727,
author = {Welch H and Hayes KJ and Frost C},
title = {REpeat testing among medicare beneficiaries},
journal = {Archives of Internal Medicine},
volume = {172},
number = {22},
pages = {1745-1751},
year = {2012},
doi = {10.1001/2013.jamainternmed.727},
URL = { + http://dx.doi.org/10.1001/2013.jamainternmed.727},
eprint = {/data/Journals/INTEMED/926061/iiq120081_1745_1751.pdf}
}