PROFUGO study protocol: Predictive model for the early diagnosis of anastomotic leak after esophagectomy and gastrectomy Rocío Pérez Quintero; Marcos Bruna Esteban; Antonio José Serrano López;

The utility of intraoperative endoscopy in the surgical treatment of Zenker's diverticulum David Plazas López; Marcos Bruna Esteban; Nuría García del Olmo;

The utility of intraoperative endoscopy in esophagogastric surgery Rocío Pérez Quintero; Marcos Bruna Esteban; Diego Juzgado de Lucas; Fernando Mingol Navarro;