(Q46055822)
Statements
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Risk reduction practices in men who have sex with men in Switzerland: serosorting, strategic positioning, and withdrawal before ejaculation (English)
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Françoise Dubois-Arber
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André Jeannin
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Stéphanie Lociciro
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Hugues Balthasar
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15 November 2011
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41
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5
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1263-1272
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