Qiu S, Chen R, Yu Z, Shao S, Yuan H, Han T. The Development and Validation of a Nomogram for Predicting Cancer-Specific Survival and a Risk Stratification System for Patients with Primary Gastrointestinal Melanoma. Turkish Journal of Gastroenterology [Internet]. 2023 Jan. 8 [cited 2026 Jan. 1];34(8):850-8. Available from: https://www.turkjgastroenterol.org/index.php/tjg/article/view/4019