Assessment of recent HIV-1 infection by a line immunoassay for HIV-1/2 confirmation. oleh Jörg Schüpbach, Martin D Gebhardt, Zuzana Tomasik, Christoph Niederhauser, Sabine Yerly, Philippe Bürgisser, Lukas Matter, Meri Gorgievski, Rolf Dubs, Detlev Schultze, Ingrid Steffen, Corinne Andreutti, Gladys Martinetti, Bruno Güntert, Roger Staub, Synove Daneel, Pietro Vernazza