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Sadler, Katharine E; Low, Nicola; Mercer, Catherine H; Sutcliffe, Lorna J; Islam, M Amir; Shafi, Shuja; Brook, Gary M; Maguire, Helen; Horner, Patrick J; Cassell, Jackie A (2010). Testing for sexually transmitted infections in general practice: cross-sectional study. BMC public health, 10, p. 667. London: BioMed Central 10.1186/1471-2458-10-667