References
- Grannum P, Berkowitz RL, Hobbins JC. The ultrasound changes in the maturing placenta and their relationship to fetal pulmonic maturity. Am J Obstet Gynecol 1979;133:915.
- McKenna D, Tharmaratnam S, Mahsud S, Dornan J. Ultrasonic evidence of placental calcification at 36 weeks' gestation: maternal and fetal outcomes. Acta Obstet Gynecol Scand 2005;84:7–10.
- Cole TJ, Freeman JV, Preece MA. Body mass index curves for the UK, 1990. Arch Dis Child 1995;73:25–29.
- Freeman JV, Cole TJ, Chinn S, Jones PRM, White EM, Preece MA. Cross-sectional stature and weight reference curves for the UK, 1990. Arch Dis Child 1995;73:17–24.
- Cole TJ, Freeman JV, Preece MA. British 1990 growth reference centiles for weight, height, body mass index and head circumference fitted by maximum penalised likelihood. Stat Med 1998;17:407–429.
- Rooth G, Huch A, Huch R. FIGO News: guidelines for the use of fetal monitoring. Int J Obstet Gynecol 1987;25:159–167.
- Sau A, Seed P, Langford K. Intraobserver and interobserver variation in the sonographic grading of placental maturity. Ultrasound Obstet Gynecol 2004;23:374–377.
- Beck T, Hockel M, Friese K. Degree of placental maturity and histopathologic finding: clinical prospective studies of a sample of term births and premature births. Z Geburtshilfe Perinatol1988;192:24–32.
- Proud J, Grant AM. Third trimester placental grading by ultrasonography as a test of fetal wellbeing. Br Med J (Clin Res Ed) 1987;294:1641–1644.
- Baeza Valenzuela A, García Méndez A. Premature aging of the placenta. Ultrasonic diagnosis [Article in Spanish]. Ginecol Obstet Mex 1995;63:287–292.
- Reis NS, Brizot ML, Schultz R, Nomura RM, Zugaib M. Placental lakes on sonographic examination: correlation with obstetric outcome and pathologic findings. J Clin Ultrasound 2005;33:67–71.
- Thompson MO, Vines SK, Aquilina J, Wathen NC, Harrington K. Are placental lakes of any clinical significance? Placenta 2002;23:685–690.
- Kalanithi LE, Illuzzi JL, Nossov VB, Frisbaek Y, Abdel-Razeq S, Copel JA, Norwitz ER. Intrauterine growth restriction and placental location. J Ultrasound Med 2007;26:1481–1489.
- Durnwald CP, Mercer BM. Myometrial thickness according to uterine site, gestational age and prior cesarean delivery. J Matern Fetal Neonatal Med 2008;21:247–250.
- Lurie S, Gomel A, Sadan O, Ginath S, Rotmensch S, Glezerman M. The duration of the third stage of labor is subject to the location of placental implantation. Gynecol Obstet Invest 2003;56:14–16.
- Buhimschi CS, Buhimschi IA, Malinow AM, Weiner CP. Myometrial thickness during human labor and immediately post partum. Am J Obstet Gynecol 2003;188:553–559.
- Raio L, Ghezzi F, Di Naro E, Gomez R, Franchi M, Mazor M, Brühwiler H. Sonographic measurement of the umbilical cord and fetal anthropometric parameters. Eur J Obstet Gynecol Reprod Biol 1999;83:131–135.
- Raio L, Ghezzi F, Di Naro E, Franchi M, Maymon E, Mueller MD, Brühwiler H. Prenatal diagnosis of a lean umbilical cord: a simple marker for the fetus at risk of being small for gestational age at birth. Ultrasound Obstet Gynecol 1999;13:176–180.
- Paavonen J, Jouttunpää K, Kangasluoma P, Aro P, Heinonen PK. Velamentous insertion of the umbilical cord and vasa previa. Int J Gynaecol Obstet 1984;22:207–211.
- Mital P, Hooja N, Mehndiratta K. Placental thickness: a sonographic parameter for estimating gestational age of the fetus. Indian J Radiol Imaging 2002;12:553–554.
- Elchalal U, Ezra Y, Levi Y, Bar-Oz B, Yanai N, Intrator O, Nadjari M. Sonographically thick placenta: a marker for increased perinatal risk – a prospective cross-sectional study. Placenta 2000;21:268–272.