Ahmed, Afsana, Mahbooba Akhter, Shafia Sharmin, Shamim Ara, and Md Mozammel Hoque. 2012. “Relationship of Maternal Folic Acid and Vitamin B12 With Birth Weight and Body Proportion of Newborn”. Journal of Dhaka National Medical College &Amp; Hospital 18 (1):7-11. https://doi.org/10.3329/jdnmch.v18i1.12224.