References
- Hossain R, Harris T, Lohsoonthorn V, Williams MA. Risk of preterm delivery in relation to vaginal bleeding in early pregnancy. Eur J Obstet Gynecol Reprod Biol 2007;135:158–63
- Sharami SH, Faraji Darkhaneh R, Zahiri Z, et al. The relationship between vaginal bleeding in the first and second trimester of pregnancy and preterm labor. Iran J Reprod Med 2013;11:385–90
- Parant O, Clouet-Delannoy M, Connan L, et al. [Metrorrhagia during the second trimester of pregnancy: obstetrical and perinatal outcome. A retrospective study including 85 cases]. J Gynecol Obstet Biol Reprod (Paris) 2000;29:66–72
- Blencowe H, Blencowe H1, Cousens S, et al. National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications. The Lancet 2012;379:2162–72
- Lam CM, Wong SF. Risk factors for preterm delivery in women with placenta praevia and antepartum haemorrhage: retrospective study. Hong Kong Med J 2002;8:163–6
- Signore CC, Sood AK, Richards DS. Second-trimester vaginal bleeding: correlation of ultrasonographic findings with perinatal outcome. Am J Obstet Gynecol 1998;178:336–40
- Dadkhah F, Kashanian M, Eliasi G. A comparison between the pregnancy outcome in women both with or without threatened abortion. Early Hum Dev 2010;86:193–6
- Koifman A, Levy A, Zaulan Y, et al. The clinical significance of bleeding during the second trimester of pregnancy. Arch Gynecol Obstet 2008;278:47–51
- Wathes D, Borwick SC, Timmons PM, et al. Oxytocin receptor expression in human term and preterm gestational tissues prior to and following the onset of labour. J Endocrinol 1999;161:143–51
- Harger JH, Hsing AW, Tuomala RE, et al. Risk factors for preterm premature rupture of fetal membranes: a multicenter case-control study. Am J Obstet Gynecol 1990;163:130–7
- Mukherjee S, Bawa AK, Sharma S, et al. Retrospective study of risk factors and maternal and fetal outcome in patients with abruptio placentae. J Nat Sci Biol Med 2014;5:425–8
- Ozdemirci S, Karahanoglu E, Esinler D, et al. Influence of threatened miscarriage on pregnancy and early postpartum period: a case-control report. J Matern Fetal Neonatal Med 2015;28:1186–9
- Babawale MO, Lovat S, Mayhew TM, et al. Effects of gestational diabetes on junctional adhesion molecules in human term placental vasculature. Diabetologia 2000;43:1185–96