Siddika, A., B. Nasrin, S. Shamim, N. Begum, N. Nahar, and S. R. Begum. “Serum Ferritin Level in Preterm Labour”. Bangladesh Journal of Obstetrics &Amp; Gynaecology, vol. 24, no. 1, Oct. 2010, pp. 14-17, doi:10.3329/bjog.v24i1.6321.