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Horner P, Blee K, O'Mahony C, Muir P, Evans C, Radcliffe K; Clinical Effectiveness Group of the British Association for Sexual Health and HIV.Horner P, et al.Int J STD AIDS. 2016 Feb;27(2):85-96. doi: 10.1177/0956462415586675. Epub 2015 May 22.Int J STD AIDS. 2016.PMID: 26002319