COMBINED METHOD OF A PANCREATIC SOUND AND CYTOLOGICAL EXAMINATION OF THE DUODENAL CONTENTS IN THE DIAGNOSIS OF CANCER OF THE PANCREAS AND BILE DUCTS
M'ETODO COMBINADO DE SONDEO PANCRE'ATICO Y EXAMEN CITOL'OGICO DEL CONTENIDO DUODENAL EN EL DIAGN'OSTICO DE C'ANCER DEL P'ANCREAS Y V'IAS BILIARES