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Accuracy of city postal code coordinates as a proxy for location of residence

C Jennifer D Bow, Nigel M Waters, Peter D Faris, Judy E Seidel, P Diane Galbraith, Merril L Knudtson, William A Ghali* and the APPROACH Investigators

International Journal of Health Geographics 2004, 3:5 doi:10.1186/1476-072X-3-5

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