BRAHAM-JEMILI, N., A. LTAIEF, H. OMRI, H. GHORBEL, T. MAHJOUB, Y. BRAHAM, F. BAHRI, A. HEDHILI, and M. KORTAS. “Contribution of Serum Vitamin B12 Levels in the Diagnosis of a Vitamin Deficiency”. Revue Tunisienne De BIOLOGIE CLINIQUE, no. 16, Oct. 2004, doi:10.71699/revtunbiolclin.vi16.210.