The Status of Vitamin D, Hemoglobin Level, ABO Blood Groups and Helicobacter pylori Infection among Patients in Tobruk, Libya. Derna Academy Journal for Applied Sciences, [S. l.], v. 7, n. 1, p. 39–45, 2026. DOI: 10.71147/h7tg1536. Disponível em: https://dp.lad.edu.ly/journals/index.php/dajas/article/view/252. Acesso em: 29 jul. 2026.