Al-Jameil, N; Aziz Khan, F; Fareed K, M; Tabassum, H (2014). "A brief overview of preeclampsia. Journal of clinical medicine research 6 (1): 1–7.
2. Amarin Vera (2013) effect of maternal age on pregnancy outcome, Journal of medicine and medical research, vol 1 (4): 28-31.
3. American College of Obstetricians and Gynecologists (2013). Hypertension in pregnancy. Report of the Task Force on Hypertension in Pregnancy." Obstet Gynecol. 122 (5): 1122–1131.
4. Bateman B.T, Simpson L.L. (2006). Higher rate of stillbirth at the extremes of reproductive age: a large nationwide sample of deliveries in the United States. Am J Obstet Gynecol; 194:840–845.
5. Bayrampour H, Heaman M. Advanced maternal age and the risk of cesarean birth: a systematic review.Birth. 2010 Sep; 37(3):219-26.
6. Bianco A, Stone J, Lynch L, Lapinski R, Berkowitz G, Berkowitz R. (1996) Pregnancy outcome at age 40 and older. Obstetn Gynecol; 87: 917-922.
7. Births statistics (2002). London (UK): Office for National Statistics.
8. Cleary-Goldman J, Malone F.D, Vidaver J (2005). FASTER Consortium. Impact of maternal age on obstetric outcome. Obstet Gynecol; 105:983–990.
9. Delbaere I, Verstraelen H, Goetgeluk S, Martens G, De Backer G, (2007) Pregnancy outcome in primiparae of advanced maternal age. Eur J Obstet Gynecol Reprod Biol 135: 41–46.
10. Finger C (2003). "Caesarean section rates skyrocket in Brazil. Many women are opting for Caesareans in the belief that it is a practical solution". Lancet 362 (9384): 628.
11. Flenady V; Koopmans L; Middleton P; Froen J.F; Smith G.C (2011). Major risk factors for stillbirth in high- income countries: a systematic review and metaanalysis, Lancet, 377:1331–1340
Floor S, Hedwig W, Cornalijn G (2012). Relationship between advanced maternal age and the mode of delivery, A systematic review.Erasmus Journal of Medicine, v
13. Fretts R.C, Usher R.H. (1997) Causes of fetal death in women of advanced maternal age. Obstet Gynecol; 89: 40–45.
14. Hall J.E (2011). Guyton and Hall Textbook of Medical Physiology. Elsevier Inc, India. 12th edition. Pg 987 – 997.
15. Hansen J.P (1986). Older maternal age and pregnancy outcome: a review of the literature. Obstet Gynecol Surv, 41:726–742.
16. Huang L, Sauve R, Birkett N, Fergusson D, van Walraven C (2008) Maternal age and risk of stillbirth: a systematic review. CMAJ 178: 165–172.
17. Ihab M.U, Anwar H. N, (2008). Advanced Maternal Age. Part I: Obstetric Complications; American journal of perinatology; 25 (8); pg 521-534.
Jacobsson B, Ladfors L, Milsom I. (2004). Advanced maternal age and adverse perinatal outcome, Obstet Gynecol; 104:727–733.
19. Jolly M, Sebire N, Harris J, Robinson S, Regan L (2000). The risk associated with pregnancy in women aged 35 years and older. Human reproduction, 15, (11): 2433- 2437.
20. Joseph KS, Allen AC, Dodds L, Turner LA, Scott H, (2005). The perinatal effects of delayed childbearing. Obstet Gynecol. 6: 1410-8.
21. Kristensen S, Salihu H.M, Keith LG, Kirby R.S, Pass M.A, Fowler K.B (2007). Impact of advanced maternal age on neonatal survival of twin small-for-gestational-age subtypes, J Obstet Gynaecol Res; 33:259–265.
22. Lo, J.O; Mission, J.F; Caughey, A.B (2013). "Hypertensive disease of pregnancy and maternal mortality. Current opinion in obstetrics & gynecology 25 (2): 124–132.
Morris, J.K; Mutton, D.E; Alberman, E (2002). "Revised estimates of the maternal age specific live birth prevalence of Down's syndrome. Journal of medical screening 9 (1): 2–6.
24. Naheed F, Tufail A, Kammeruddin K, Madiha S. (2009) Obstetrical risks with increased maternal age > 35 years. Pakistan J Surg; 25: 240-243.
25. Nelson, S. M.; Telfer, E. E.; Anderson, R. A. (2012). "The ageing ovary and uterus: New biological insights". Human Reproduction Update 19 (1): 67–83.
26. Olusanya B.O, Solanke O.A (2012). Perinatal correlates of delayed childbearing in a developing country. Arch Gynecol Obstet. 285(4): 951-957.
27. Paulson R.J, Boostanfar R, Saadat P, Mor E, Tourgeman D.E, Slater C.C (2002) Pregnancy in the sixth decade of life: obstetric outcomes in women of advanced reproductive age. JAMA, 288:2320 –2323.
28. Salihu H.M, Shumpert M.N, Slay M, Kirby R, Alexander G.R. (2003). Childbearing beyond maternal age 50 and fetal outcomes in the United States, Obstet Gynecol; 102:1006–1014.
29. Schmidt, L; Sobotka, T; Bentzen, J. G; Nyboe Andersen, A (2011). On behalf of the ESHRE Reproduction Society Task Force, Demographic and medical consequences of the postponement of parenthood". Human Reproduction Update 18 (1): 29–43.
30. Usta I.M, Nassar A.H (2008). Advanced maternal age, Part I: Obstetric Complications. Am J Perinatol. 25(8):521-534.