@article{doi:10.1001/archpedi.157.8.803,
author = {Neumark-Sztainer D and Story M and Hannan PJ and Tharp T and Rex J},
title = {Factors associated with changes in physical activity: A cohort study of inactive adolescent girls},
journal = {Archives of Pediatrics & Adolescent Medicine},
volume = {157},
number = {8},
pages = {803-810},
year = {2003},
doi = {10.1001/archpedi.157.8.803},
URL = { + http://dx.doi.org/10.1001/archpedi.157.8.803},
eprint = {/data/Journals/PEDS/11797/poa20369_803_810.pdf}
}