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Evans, Alison and Wiggins, Richard D. and Mercer, Catherine and Bolding, Graham and Elford, Jonathan (2007) Men who have sex with men in Great Britain: comparison of a self-selected internet sample with a national probability sample. Sexually Transmitted Infections, 83 (3). pp. 200-205. ISSN Print: 1368-4973 Online: 1472-3263