Jahan, I., M. Mannan, S. K. Dey, S. C. Moni, and M. Shahidullah. “Biochemical Bone Markers for Early Detection of Osteopaenia of Prematurity”. Bangladesh Medical Research Council Bulletin, vol. 42, no. 3, Apr. 2017, pp. 104-10, doi:10.3329/bmrcb.v42i3.32209.