Writing – original draft: Bahareh Goodarzi. Writing – review & editing: Bahareh Goodarzi, Annika Walker, Lianne Holten, Linda Schoonmade, Pim Teunissen, Franc¸ois Schellevis, Ank de Jonge. References 1. United Nations Department of Economic and Social Affairs Population Division. World Population Prospects: The 2017 Revision, custom data acquired via website [Internet]. 2017 [cited 2018 Dec 27]. 2. WHO UNICEF UNFPA World Bank Groups and the United Nations Populations Division. Trends in maternal mortality: 1990 to 2015. 2015. 3. Blencowe H, Cousens S, Jassir FB, Say L, Chou D, Mathers C, et al. National, regional, and worldwide estimates of stillbirth rates in 2015, with trends from 2000: a systematic analysis. Lancet Glob Heal. 2016; 4(2):e98–108. 4. The UN Inter-Agency Group for Child Mortality Estimation. Levels & trends in child mortality report 2018. 2018. 5. Building U.S. Capacity to Review and Prevent Maternal Deaths. Report from nine maternal mortality review committees. 2018. 6. Bairoliya N, Fink G. Causes of death and infant mortality rates among full-term births in the United States between 2010 and 2012: an observational study. PLOS Med. 2018; 15(3):e1002531. https:// PMID: 29558463 7. Glasziou P, Straus S, Brownlee S, Trevena L, Dans L, Guyatt G, et al. Evidence for underuse of effective medical services around the world. Lancet. 2017; 390(10090):169–77. S0140-6736(16)30946-1 PMID: 28077232 8. Miller S, Abalos E, Chamillard M, Ciapponi A, Colaci D, Comande´ D, et al. Beyond too little, too late and too much, too soon: a pathway towards evidence-based, respectful maternity care worldwide. Lancet. 2016; 388(10056):2176–92. PMID: 27642019 9. The Lancet. Lancet Series Every Newborn [Internet]. 2014 [cited 2019 Dec 4]. https://www.thelancet. com/series/everynewborn 10. The Lancet. The Lancet Series Child death in high-income countries [Internet]. 2014 [cited 2019 Dec 4]. 11. The Lancet. The Lancet Series Maternal Health [Internet]. 2016 [cited 2019 Dec 4]. https://www. 12. The Lancet. The Lancet Series Midwifery [Internet]. 2014 [cited 2019 Dec 4]. https://www.thelancet. com/series/midwifery 13. Renfrew MJ, McFadden A, Bastos MH, Campbell J, Channon AA, Cheung NF, et al. Midwifery and quality care: findings from a new evidence-informed framework for maternal and newborn care. Lancet. 2014; 384(9948):1129–45. PMID: 24965816 14. Souza JP, Gu¨ lmezoglu AM, Vogel J, Carroli G, Lumbiganon P, Qureshi Z, et al. Moving beyond essential interventions for reduction of maternal mortality (the WHO Multicountry Survey on Maternal and Newborn Health): a cross-sectional study. Lancet. 2013; 381(9879):1747–55. S0140-6736(13)60686-8 PMID: 23683641 15. Kennedy HP, Yoshida S, Costello A, Declercq E, Dias MA, Duff E, et al. Asking different questions: research priorities to improve the quality of care for every woman, every child. Lancet Glob Heal. 2016; 4(11):e777–9. 16. Kennedy HP, Cheyney M, Dahlen HG, Downe S, Foureur MJ, Homer CSE, et al. Asking different questions: a call to action for research to improve the quality of care for every woman, every child. Birth. 2018 Sep; 45(3):222–31. PMID: 29926965 17. Styles M, Cheyne H, O’Carroll R, Greig F, Dagge-Bell F, Niven C. The Scottish Trial of Refer or Keep (the STORK study): midwives’intrapartum decision making. Midwifery. 2011; 27:104–11. https://doi. org/10.1016/j.midw.2009.12.003 PMID: 20137838 18. Cohen L, Schaeffer M, Davideau J-L, Tenenbaum H, Huck O. Obstetric knowledge, attitude, and behavior concerning periodontal diseases and treatment needs in pregnancy: influencing factors in France. J Periodontol. 2015; 86(3):398–405. PMID: 25427617 19. Offerhaus PM, Otten W, Boxem-Tiemessen JCG, de Jonge A, van der Pal-de Bruin KM, Scheepers PLH, et al. Variation in intrapartum referral rates in primary midwifery care in the Netherlands: a ONE Risk selection in maternal and newborn care ONE | June 8, 2020 13 / 22 81 3 TOWARDS A BETTER UNDERSTANDING OF RISK SELECTION