Vela-Velásquez, C.T. 2011. Comparison between gastric biopsies without fixation for 24 hours and conventional biopsy for the diagnosis of Helicobacter pylori in a reference hospital in Peru. Revista Peruana de Medicina Experimental y Salud Pública. 28, 1 (Mar. 2011). DOI:https://doi.org/10.17843/rpmesp.2011.281.454.