Rafipour H, Mohebbi E, Zendehdel K, Muhammadnejad S, Akbari P, Hashemi S, Nouri K, Moradkhani F, Barati T, Amanpour S. Opium Carcinogenicity: A Systematic Review of Experimental Studies. Basic Clin Cancer Res. 2020;12(2):98-108.