Mohammadi, Mahsa, Philippe Tadger, Amir Sadeghi, Niloufar Salehi, Mohsen Rajabnia, Elham Paraandavaji, Sasan Shafiei, et al. “Opium Use and Gastrointestinal Cancers: A Systematic Review and Meta-Analysis Study”. Gastroenterology and Hepatology from Bed to Bench 17, no. 2 (April 14, 2024). Accessed August 10, 2026. https://journals.sbmu.ac.ir/ghfbb/index.php/ghfbb/article/view/2882.