“The Effect of Phytochemicals Intake from Green Leafy Vegetables on the Incidence of Gastrointestinal Cancers: A Meta-Analysis” (2017) Global Journal of Medical Research, 17(L1), pp. 1–8. Available at: https://medicalresearchjournal.org/index.php/GJMR/article/view/1433 (Accessed: 13 March 2026).