1 Esophagogastric and Bariatric Unit. General Surgery Area, Complejo Hospitalario de Navarra, C/Irunlarrea 3, 31008, Pamplona, Spain. myarnozi@navarra.es.
2 Esophagogastric and Bariatric Unit. General Surgery Area, Complejo Hospitalario de Navarra, C/Irunlarrea 3, 31008, Pamplona, Spain.