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APA Citation
Östberg, A., & Petzold, M. (n.d.). a longitudinal study of the impact of change in socioeconomic status on dental caries in the permanent dentition of Swedish children and adolescents. Community dentistry and oral epidemiology, 48(4), 271–279. http://access.bl.uk/ark:/81055/vdc_100143565925.0x000040