Islam, M.T. et al. 2016. Relation between serum vitamin B₁₂ level and duration of treatment with carbamazepine in epilepsy patients. Bangabandhu Sheikh Mujib Medical University Journal. 9, 4 (Dec. 2016), 223–226. DOI:https://doi.org/10.3329/bsmmuj.v9i4.30371.