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The Status of Vitamin D, Hemoglobin Level, ABO Blood Groups and Helicobacter pylori Infection among Patients in Tobruk, Libya. DAJAS [Internet]. 2026 Jul. 20 [cited 2026 Jul. 29];7(1):39-45. Available from: https://dp.lad.edu.ly/journals/index.php/dajas/article/view/252