Study the relationship between Selenium , Vitamin B6 , B12 and hyperhomocysteine  in patients with cardiovascular disease in Thi-Qar Governorate. UTJsci [Internet]. 2023 Jun. 28 [cited 2024 Dec. 25];10(1):95-100. Available from: http://mail.jsci.utq.edu.iq/index.php/main/article/view/957