@article{Curtis2007,
author = {Curtis, L.H. and Hammill, B.G. and Eisenstein, E.L. and Kramer, J.M. and Anstrom, K.J.},
title= {Using inverse probability-weighted estimators in comparative effectiveness analyses with observational databases},
year = {2007},
doi = {10.1097/MLR.0b013e31806518ac},
volume = {45},
number = {10},
pages = {103--107},
}