Sultana, Masuda, Nasim Jahan, Nayma Sultana, Shamshad Begum Quraishi, and Tasrina Rabeya Chowdhury. 2010. “Preterm Delivery: Role of Zinc”. Journal of Bangladesh Society of Physiologist 5 (1):27-33. https://doi.org/10.3329/jbsp.v5i1.5415.