1. GBD 2015 Maternal Mortality Collaborators. Global, regional, and national levels of maternal mortality, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015. Lancet. 388, 1775–812 (2106).
2. Begley, C. M. et al. Active versus expectant management for women in the third stage of labour. Cochrane Database Syst Rev. 3, CD007412 (2015).
3. Güngördük, K. et al. Using intraumbilical vein injection of oxytocin in routine practice with active management of the third stage of labor: a randomized controlled trial. Obstet Gynecol. 116, 619–624 (2010).
4. Westhoff, G., Cotter, A. M. & Tolosa, J. E. Prophylactic oxytocin for the third stage of labour to prevent postpartum haemorrhage. Cochrane Database Syst Rev. 10, Cd001808 (2103).
5. Hofmeyr, G. J., Mshweshwe, N. T. & Gulmezoglu, A. M. Controlled cord traction for the third stage of labour. Cochrane Database Syst Rev. 1, Cd008020 (2015).