@article{Li2010,
author = {Li, Y. and Wu, S. },
title= {Social networks and health among rural-urban migrants in China: A channel or a constraint? },
year = {2010},
doi = {10.1093/heapro/daq020},
journal = {Health Promotion International },
volume = {25},
number = {3},
pages = {371--380},
}