Imhof, ChristophFavre, OlivierGredig, Daniel2016-07-112016-07-112014-07-24http://hdl.handle.net/11654/22723en-UK360 - Soziale Probleme, Sozialdienste, VersicherungenLonger-term “Safer Sex”: protective factors facilitating consistent “safer sex” practice over decades in men having sex with men in Switzerland confirm the importance of structural prevention approaches. Poster THPE13606 - Präsentation3-9