Dzed L, Pokhrel HP, Zangpo L, Pelzom D, Dendup U. Vitamin B12 Deficiency among Boarding School Children from Seven Districts of Bhutan. ijirms [Internet]. 2019 Aug. 29 [cited 2025 Apr. 28];4(08):507 to 511. Available from: https://mail.ijirms.in/index.php/ijirms/article/view/735