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A multicentre randomised controlled trial evaluating lactobacilli and bifidobacteria in the prevention of antibiotic-associated diarrhoea in older people admitted to hospital: the PLACIDE study protocol

Stephen J Allen*, Kathie Wareham, Caroline Bradley, Wyn Harris, Anjan Dhar, Helga Brown, Alwyn Foden, Way Yee Cheung, Michael B Gravenor, Sue Plummer, Ceri J Phillips and Dietrich Mack

BMC Infectious Diseases 2012, 12:108  doi:10.1186/1471-2334-12-108