@article{Austin2015,
author = {Austin, P.C. and Stuart, E.A.},
title= {Moving towards best practice when using Inverse Probability of Treatment Weighting (IPTW) using the propensity score to estimate causal treatment effects in observational studies},
year = {2015},
doi = {10.1002/sim.6607},
volume = {34},
number = {28},
pages = {3661--3679},
}