Diagnostic performance of tests based on Trypanosoma cruzi excreted–secreted antigens in an endemic area for Chagas' disease in Bolivia - Zarate-Blades, Carlos Rodrigo; Bladés, Nelly; Nascimento, Marilda Savoia; Silveira, José Franco da; Umezawa, Eufrosina Setsu (Diagnostic Microbiology and Infectious Disease, 2007)