Evaluation of serum carcinoembryonic antigen monitoring in the follow-up of colorectal cancer patients with metastatic lymph nodes and a normal preoperative serum level

1. Tobaruela, E.
2. Enriquez, J.M.
3. Diez, M.
4. Camunas, J.
5. Muguerza, J.
6. Granell, J.