@article{doi:10.1001/jama.296.24.2907,
title = {GRoups take aim at us preterm birth rate},
journal = {JAMA},
volume = {296},
number = {24},
pages = {2907-2915},
year = {2006},
doi = {10.1001/jama.296.24.2907},
URL = { + http://dx.doi.org/10.1001/jama.296.24.2907},
eprint = {/data/Journals/JAMA/5080/jmn1227_2907_2908.pdf}
}