Barahona-Garrido Josué, López-Arce Gustavo, Criales Sergio
Instituto de Enfermedades Digestivas y Nutricionales and Department of Gastroenterology and Gastrointestinal Endoscopy, Hospital General San Juan de Dios, Guatemala City, Guatemala.
Gastroenterology. 2010 Sep;139(3):e3-5. doi: 10.1053/j.gastro.2009.09.071. Epub 2010 Jul 30.