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APA Citation
Pate, A., Barrowman, M., Webb, D., Pimenta, J. M., Davis, K. J., Williams, R., Van Staa, T., & Sperrin, M. (2018). study investigating the generalisability of a COPD trial based in primary care (Salford Lung Study) and the presence of a Hawthorne effect. BMJ open respiratory research, 5(1), . http://access.bl.uk/ark:/81055/vdc_100137789957.0x000003