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APA Citation
Colling, A., Kerr, I., Maxted, W. R., & Widdowson, J. P. (1982). minimum amount of penicillin prophylaxis required to control Streptococcus pyogenes epidemic in closed community.. BMJ, 285(6335), 95–96. http://access.bl.uk/ark:/81055/vdc_100180428615.0x000006