8Miettinen M, Lasota J. Gastrointestinal stroInal tumors definition, clinical, histological, immuno - histochemical, and molecular genetic features and differential diagnosis. Virchows Arch, 2001,38: 1212- 1216.
9Fletcher CDM, Berman JJ, Corless C, et al. Diagnosis of gastrointestinal stromal tumors: a consensus approach. Hum Pathol, 2002,33:459 - 465.