@article{Umberson2010,
author = {Umberson, D. and Crosnoe, R. and Reczek, C.},
title= {Social relationships and health behavior across the life course},
year = {2010},
doi = {10.1146/annurev-soc-070308-120011},
journal = {Annual Review of Sociology},
volume = {36},
pages = {139--157},
}