RT Journal Article SR Electronic T1 Preterm Birth: Now the Leading Cause of Child Death Worldwide JF Science Translational Medicine FD American Association for the Advancement of Science SP 263ed21 OP 263ed21 DO 10.1126/scitranslmed.aaa2563 VO 6 IS 263 A1 Lawn, Joy E. A1 Kinney, Mary YR 2014 UL http://stm.sciencemag.org/content/6/263/263ed21.abstract AB