Historical phasing of reductions in neonatal mortality rates in the United Kingdom and United States during the 20th century. Source: Born Too Soon, Chapter 6 . Data sources for UK and US historical data: (CDC, 2012, Office for National Statistics, 2012, NIH, 1985, Smith et al., 1983, Jamison et al., 2006, Lissauer and Fanaroff, 2006, Baker, 2000, Philip, 2005, Wegman, 2001) [54–62]. With thanks to Boston Consulting Group. Note: more information on history of neonatal mortality reduction in UK and USA available (Lawn et al, 2013) . Data sources for Afghanistan, India, Brazil, and Russia from Child Health Epidemiology Reference Group/World Health Organization cause of death estimates for 2010 from Liu et al., 2012 .