@article{doi:10.1001/archpediatrics.2011.1835,
author = {Tandon PS and Zhou C and Christakis DA},
title = {FRequency of parent-supervised outdoor play of us preschool-aged children},
journal = {Archives of Pediatrics & Adolescent Medicine},
volume = {166},
number = {8},
pages = {707-712},
year = {2012},
doi = {10.1001/archpediatrics.2011.1835},
URL = { + http://dx.doi.org/10.1001/archpediatrics.2011.1835},
eprint = {/data/Journals/PEDS/24704/poa110062_707_712.pdf}
}