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APA Citation
McHugh, K., Fraser, I., Bourke, S., McSharry, C., Lynch, P., & Anderson, K. (n.d.). p204 Reducing antigen exposure in pigeon breeders. Wearing a mask is a sign of disease. Thorax, 68, A168. http://access.bl.uk/ark:/81055/vdc_100135134411.0x00002c