Title of article :
Localization of endocrine pancreatic and gastroduodenal tumors by endoscopic ultrasonography (In Spanish) : Varas MJ, Boix J, Armengol JR (Unitad de Ecografias, Consorci de lʹHospital de la Creu Roja, Avda José Molins 29–41, Barcelona, Spain). Rev Esp Enf
