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APA Citation
Sanders, A. E., Slade, G. D., John, M. T., Steele, J. G., Suominen-Taipale, A. L., Lahti, S., Nuttall, N. M., & Allen, P. F. (2009). a cross-national comparison of income gradients in oral health quality of life in four welfare states: application of the Korpi and Palme typology. Journal of epidemiology and community health, 63(7), 569–574. http://access.bl.uk/ark:/81055/vdc_100135568677.0x000026