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APA Citation
Demou, E., Dobson, R., Sweeting, H., Brown, A., Sidwell, S., O'Donnell, R., Hunt, K., & Semple, S. (n.d.). changes in exposure to second-hand smoke following a smoking ban across a national prison system. European journal of public health, 30, . http://access.bl.uk/ark:/81055/vdc_100116630087.0x000024