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Abbasnezhad, Amir and Falahi, Ebrahim and Ghavamzadeh, Saeid and Beiranvand, Ramin and Hasanvand, Amin and Choghakhori, Razieh (2021) Association between deficient levels of circulating vitamin D, dietary intake of vitamin D, calcium and retinol, and risk of colorectal cancer in an Iranian population: A case control study. Asia Pac J Clin Oncol.