Predictors of attrition among adults in a rural HIV clinic in southern Mozambique: 18-year retrospective study oleh Edy Nacarapa, M. Elisa Verdu, Joana Nacarapa, Artur Macuacua, Bartolomeu Chongo, Dulce Osorio, Isabelle Munyangaju, Didier Mugabe, Roger Paredes, Ana Chamarro, Boris Revollo, Silvio S. Alexandre, Mulassua Simango, Diego Torrus, Jose-Manuel Ramos-Rincon