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APA Citation
Karim, M. E., Petkau, J., Gustafson, P., Platt, R. W., Tremlett, H., & , (2018). comparison of statistical approaches dealing with time-dependent confounding in drug effectiveness studies. Statistical methods in medical research, 27, 1709–1722. http://access.bl.uk/ark:/81055/vdc_100072814460.0x000018