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APA Citation
Lewis, N., Dube, G., Carter, C., Pitt, R., Alexander, S., Ison, C. A., Harding, J., Brown, L., Fryer, J., Hodson, J., & Ross, J. (2012). chlamydia and gonorrhoea contamination of clinic surfaces. Sexually transmitted infections, 88(6), 418–421. http://access.bl.uk/ark:/81055/vdc_100135128205.0x00000f