N. K. Sharma, S. N. Dey, M. M. Rahman, A. Zahan, M. Islam, and .-. Mukthadira, “Role of Ultrasonographic Measurement of Fetal Head Circumference in the Evaluation of Gestational age in Bangladeshi Women”, Comm. Based Med J, vol. 6, no. 2, pp. 6–11, Sep. 2017.