TY - JOUR A1 - Wollum, A. A1 - Burstein, R. A1 - Fullman, N. A1 - Dwyer-Lindgren, L. A1 - Gakidou, E. T1 - Benchmarking health system performance across states in Nigeria: A systematic analysis of levels and trends in key maternal and child health interventions and outcomes, 2000–2013 Y1 - 2015 DO - 10.1186/s12916-015-0438-9 JF - BMC Medicine VL - 13 IS - 1 ER -