Mustafa MM, Al Atram AA, Mousleh MM. Signs and Symptoms of Vitamin B12 Deficiency and its Impacts on Student’s Academic Performance. IJSBAR [Internet]. 2014 Aug. 23 [cited 2026 Apr. 1];18(1):143-50. Available from: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/2361