Use of fourth-generation rapid combined antigen and antibody diagnostic tests for the detection of acute HIV infection in a community centre for men who have sex with men, between... oleh Jorge Saz, Albert Dalmau-Bueno, Michael Meulbroek, Ferran Pujol, Josep Coll, Ángel Herraiz-Tomey, Félix Pérez, Giovanni Marazzi, Héctor Taboada, Dante R Culqui, Joan A Caylà, BCN Checkpoint Working Group