TY - BOOK A1 - World Health Organization (WHO) T1 - Trends in maternal mortality: 1990 to 2015: Estimates by WHO, UNICEF, UNFPA, World Bank Group and the United Nations Population Division Y1 - 2015 UR - http://apps.who.int/iris/bitstream/10665/87982/1/9789241506113_eng.pdf CY - Geneva PB - WHO ER -