PROSPECTIVE STUDY FOR VALIDATION OF A SINGLE PROTOCOL FOR THE 13C-UREA BREATH TEST USING TWO DIFFERENT DEVICES IN THE DIAGNOSIS OF H. PYLORI INFECTION

by Luiz Gonzaga Vaz COELHO, Osmar Reni TRINDADE, Laiane Alves LEÃO, Henrique Gomes RIBEIRO, Izabella Silva FREITAS, Maria Clara Freitas COELHO