@article{doi:10.1001/archsurg.2010.271,
author = {Camp M and Chang DC and Zhang Y and et al},
title = {PRovider density and health system facility factors and their relationship to rates of pediatric perforated appendicitis in us counties},
journal = {Archives of Surgery},
volume = {145},
number = {12},
pages = {1139-1144},
year = {2010},
doi = {10.1001/archsurg.2010.271},
URL = { + http://dx.doi.org/10.1001/archsurg.2010.271},
eprint = {/data/Journals/SURG/5395/soa05042_1139_1144.pdf}
}