AHUJA, Sana et al. Prognostic Significance of Tumor-Stroma Ratio in Hepatocellular and Gall Bladder Carcinoma: Protocol for a Systematic Review and Meta-analysis. Asian Pacific Journal of Environment and Cancer, [S. l.], p. 20250504, 2025. DOI: 10.31557/apjec.1737.20250504. Disponível em: http://waocp.com/journal/index.php/apjec/article/view/1737. Acesso em: 30 may. 2026.