A double-blinded, prospective study to define antigenemia and quantitative real time polymerase chain reaction cutoffs to start preemptive therapy in low-risk, seropositive, renal transplanted recipients - David-Neto, Elias; Triboni, Ana H. K.; Paula, Flavio J.; Vilas Boas, Lucy S.; Machado, Clarisse Martins; Agena, Fabiana; Latif, Acram Z. A.; Alencar, Cecilia S.; Pierrotti, Ligia C.; Nahas, William C.; Caiaffa-Filho, Helio H.; Pannuti, Claudio S. (Clinical and Transplantation Research, 2014)