1. Nobis P, Das U. Placental morphology in hypertensive pregnancy. J Obstet Gynecol 1990; 40: 166-169.
2. Morgan RP. Immunology of term and preterm labour: Reproductive biol and endocrinol 2003; 1: 122.
3. Errol RN, Danny JS, Susan JF. Implantation and survival of early pregnancy. N Engl J Med 2001; 345: 1400-1408.
4. Van Dijk M, Mulders J, Poutsma A. Maternal segregation of the Dutch preeclampsia locus at 10q22 with a new member of the winged helix gene family. Nat Genet 2005; 37: 514-519.
5. Johnson MP, Fitzpatrick E, Dyer TD. Identification of two novel quantitative trait loci for pre-eclampsia susceptibility on chromosomes 5q and 13q using a variance components-based linkage approach. Mol Hum Reprod 2007; 13: 61-67.
6. Bewly S, Cooper D, Campbell S. Doppler investigation of uteroplacental blood flow resistance in the second trimester. A screening study for pre-eclampsia and intra-uterine growth retardation. Br J Obst Gynaecol 1991; 98:871-9.
7. Stock MK, Anderson DF, Phernetton TM, McLaughlin MK, Rankin JH. Vascular response of the maternal placental vasculature. J Dev Physiol 1980; 2: 239-246.
8. Thomson AM, Billewickz, Hytten FE. Placenta in relation to birth weight. J Obstet Gynecol Br CW 1969; 76: 865-872.
9. Derek LJ. Fundamentals of obstetrics and gynaecology. In: Hypertensive disease in pregnancy (Toxaemias of pregnancy). Faber and Faber, London. 4th Edn. 1982; 17: 227.
10. J Popek EJ, Salfia CM. Placenta in Anderson’s Pathology Vol.II. 10th Ed. Ivan Domjanov, Mosby, Missourie. 1996; 2310-2353.
11. Browne JCM, Veall N. The maternal blood flow in normotensive and hypertensive women. J Obst Gynaecol of British Empire 1953; 60: 141-147.
12. Damania KR, Salvi VS, Ratnaparki SK, Daftari SN. The placenta in hypertensive disorder in pregnancy. J Obstet Gynaecol Ind 1989; 39: 28-33.
13. Rohini Motwani, Yogesh Sontakke, Meena Goyal. Effects of pregnancy induced hypertension on human placenta. J Evolution of Medical and Dental Sciences 2013; 2(33): 6275-6282.
14. Majumdar S, Dasgupta H, Bhattacharya K, Bhattacharya A. A Study of Placenta in Normal and Hypertensive Pregnancies. J Anat society India 2005; 54 (2): 34-38.
15. Zeek PM, Assali NS. Vascular changes in the decidua associated with eclamptogenic toxaemia of pregnancy. Am J Clin Pathol 1950; 20: 1099-1109.
16. Kher AV, Zawar MP. Study of placental pathology in toxemia of pregnancy and its foetal implications. Indian J Pathol Microbiol 1981; 24: 245-251.
17. Sodhi S, Mohan H, Jaiswal TS, Mohan PS, Rathee S. Placental pathology in Pre-eclampsia syndrome. Indian J Pathol Microbiol 1990; 33 (1):11-16.
18. Heazella AEP, Moll SJ, Jones CJ, Baker PN, Crocker IP. Formation of syncytial knots is increased by hyperoxia, hypoxia and reactive oxygen species. Placenta 2007; 28 (Suppl A): 33-40.
19. Kristina L, Raanan S, Rebecca B. Syncytial knots as a Reflection of Placental Maturity: Reference values for 20 to 40 week gestational age. Pediatric and Developmental Pathology 2009; 28: 28-37.
20. Masodkar AR, Kalamkar LR, Patke PS. Histopathology of placenta and its correlation with fetal outcome. J Obstet Gynaecol Ind 1985; 35: 294-297.
21. Narasimha A, Vasudeva DS. Spectrum of changes in placenta in toxemia of pregnancy. Indian J Pathol Microbiol 2011; 54: 15-20.