Evaluation of the bilio-pancreatic region using endoscopic ultrasonography in patients referred with and without abdominal pain and CA 19-9 serum level elevation

1. Ulla Rocha, J.L.
2. Alvarez Sanchez, M.V.
3. Paz Esquete, J.
4. Fernandez Salgado, E.
5. Alvarez Alvarez, C.
6. Vazquez Sanluis, M.J.
7. Ledo Barro, L.
8. Vasquez Astray, E.