1. Postpartum haemorrhage in nulliparous women: incidence and risk factors in low and high risk women. A Dutch population-based cohort study on standard (> or = 500 ml) and severe (> or = 1000 ml) postpartum haemorrhage;Bais;Eur. J. Obstet. Gynecol. Reprod. Biol.,2004
2. The retained placenta;Weeks;Best Pract. Res. Clin. Obstet. Gynaecol.,2008
3. The retained placenta: historical and geographical rate variations;Cheung;J. Obstet. Gynaecol.,2011
4. WHO Guidelines for the Management of Postpartum Haemorrhage and Retained Placenta;Organization W.H,2009
5. The number of multinucleated trophoblastic giant cells in the basal decidua is decreased in retained placenta;van Beekhuizen;J. Clin. Pathol.,2009