Jayawardena, G.R.M.U.G P.; Ranatunga, R.G.J.D.; Gunarathna, S.M.S.G.; Wickramasinghe, P.; Dias, T.
(Sri Lanka College of Obstetricians and Gynaecologists, 2015)
Background: Early accurate estimation of gestational age is the most important intervention in pregnancy. Ultrasound between 11 and 13 weeks is most reliable in dating. There is no uniform policy in timing of dating scan ...