Guillermo Zarama

Source of variation in the diagnosis of Helicobacter pylori   -associated multifocal atrophic gastritis (2008)

Bravo, Luis Eduardo, Bravo, Juan Carlos, Realpe, José Luis, Zarama, Guillermo, Piazuelo, María Blanca, Correa,Pelayo

Introduction: Multiple sampling from different sites of the stomach as well as the number of fragments of gastric mucosa available for histopathologic evaluation are important sources of variation...

RESPONSE: Re: Chemoprevention of Gastric Dysplasia: Randomized Trial of Antioxidant Supplements and Anti-Helicobacter pylori Therapy (2001)

Correa, Pelayo, Fontham, Elizabeth T. H., Bravo, Juan C., Bravo, Luis E., Ruiz, Bernardo, Zarama, Guillermo, ...

Chemoprevention of Gastric Dysplasia: Randomized Trial of Antioxidant Supplements and Anti-Helicobacter pylori Therapy (2000)

Correa, Pelayo, Fontham, Elizabeth T. H., Bravo, Juan C., Bravo, Luis E., Ruiz, Bernardo, Zarama, Guillermo, ...

Background: Previous research has identified a high risk of gastric carcinoma as well as a high prevalence of cancer precursor lesions in rural populations living in the province of Nariño,...