@article{González-Block2011,
author = {González-Block, M.A. and de la Sierra, L.A.},
title= {Hospital utilization by Mexican migrants returning to Mexico due to health needs},
year = {2011},
doi = {10.1186/1471-2458-11-241},
journal = {BMC Public Health },
volume = {11},
pages = {241--248},
}