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Overall survival analysis utilizing Kaplan–Meier method. There is a statistically significant curve separation between GLUT-1-positive and GLUT-1-negative cases for the whole group of neuroendocrine carcinomas (a) (P < 0.001) and carcinoids (b) (P = 0.01). Pos, GLUT-1-positive cases; Neg, GLUT-1-negative cases. GLUT-1, glucose transporter-1.
