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OXFORDJOURNALS.AJE.A113671
OXFORDJOURNALS.AJE.A113671
http://dx.doi.org/10.1093/OXFORDJOURNALS.AJE.A113671
On epidemiologic surveys.
P356
Q40162195-B8BA93C1-62F7-404C-8691-2760566D4DD0
P356
OXFORDJOURNALS.AJE.A113671
http://dx.doi.org/10.1093/OXFORDJOURNALS.AJE.A113671