2023. Study the relationship between Selenium , Vitamin B6 , B12 and hyperhomocysteine  in patients with cardiovascular disease in Thi-Qar Governorate. University of Thi-Qar Journal of Science. 10, 1 (Jun. 2023), 95–100. DOI:https://doi.org/10.32792/utq/utjsci/v10i1.957.