@article{doi:10.1001/archpedi.158.4.353,
author = {Burdette HL and Whitaker RC and Daniels SR},
title = {PArental report of outdoor playtime as a measure of physical activity in preschool-aged children},
journal = {Archives of Pediatrics & Adolescent Medicine},
volume = {158},
number = {4},
pages = {353-357},
year = {2004},
doi = {10.1001/archpedi.158.4.353},
URL = { + http://dx.doi.org/10.1001/archpedi.158.4.353},
eprint = {/data/Journals/PEDS/11999/POA30367.pdf}
}