@article{doi:, title = {Quickstats: From the national center for health statistics percentage of emergency department visits by persons aged ≤18 years, by primary expected source of payment—national hospital ambulatory medical care survey, united states, 2001-2002 to 2009-2010}, journal = {JAMA}, volume = {309}, number = {7}, pages = {653}, year = {2013}, doi = {}, URL = { + http://dx.doi.org/}, eprint = {/data/Journals/JAMA/926413/jwr130005_653a_653.pdf} }