Belfiori, Giulio, et al. “Risk Stratification Systems for Surgically Treated Localized Primary Gastrointestinal Stromal Tumors (GIST). Review of Literature and Comparison of the Three Prognostic Criteria: MSKCC Nomogramm, NIH-Fletcher and AFIP-Miettinen”. Annali Italiani Di Chirurgia, vol. 86, no. 3, May 2015, pp. 219-27, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1402.