Additional malignancies in patients with gastrointestinal stromal tumors (GIST): incidence, pathology and prognosis according to a time of occurrence-based classification

1. Fernández, J.A.
2. Olivares, V.
3. Gómez-Ruiz, A.J.
4. Ferri, B.
5. Frutos, M.D.
6. Soria, T.
7. Torres, G.
8. Parrilla, P.