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APA Citation
Wheeler, J. G., Sethi, D., Cowden, J. M., Wall, P. G., Rodrigues, L. C., Tompkins, D. S., Hudson, M. J., & Roderick, P. J. (1999). study of infectious intestinal disease in England: rates in the community, presenting to general practice, and reported to national surveillance. BMJ, 318(7190), 1046–1050. http://access.bl.uk/ark:/81055/vdc_100180891138.0x000044