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APA Citation
Davies, N., Thomas, K., Taylor, A., Taylor, G., Martin, R., Munafo, M., & Windmeijer, F. (n.d.). p26 How to compare instrumental variable and conventional regression analyses using negative controls and bias plots. Journal of epidemiology and community health, 70, A65. http://access.bl.uk/ark:/81055/vdc_100137792668.0x000035