Mahmood, S.; Chowdhury, S.; Chowdhury, S. B. Color Doppler Evaluation of Cerebral - Umbilical Pulsatility Ratio and Its Usefulness in the Diagnosis of Intrauterine Growth Retardation and Prediction of Adverse Perinatal Outcome. J. Bangladesh Coll. Phys. 2017, 34, 145-150.