P25.03: Fetal umbilical/middle cerebral artery pulsatility indices and the cerebroplacental ratio (CPR) normograms at 16–40 weeks of gestation by polynomial regression analysis. (September 2017) - Dias, T.; Abeykoon, S.; Gunawadena, C.; Kumarasiri, S.; Padeniya, T.; Pathmeswaran, A.