Health Policy Plan 2015 Jul 23;30(6):813-21. Epub 2014 Jun 23.
Institute for Global Health, University College London, London WC1N 1EH, UK, Maternal and Child Health Intervention Research Group, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK, Human Development Research Foundation, Islamabad 44000, Pakistan, Epidemiology and Global Health, Umeä University, 90187 Umeå, Sweden, Institute of Psychology, Health & Society, Child Mental Health Unit, University of Liverpool, Liverpool L69 3BX, UK, Department of Population Health and Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK, Health Economics and Systems Group, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK and Health Economics Unit, University of Cape Town, Observatory 7925, South Africa Institute for Global Health, University College London, London WC1N 1EH, UK, Maternal and Child Health Intervention Research Group, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK, Human Development Research Foundation, Islamabad 44000, Pakistan, Epidemiology and Global Health, Umeä University, 90187 Umeå, Sweden, Institute of Psychology, Health & Society, Child Mental Health Unit, University of Liverpool, Liverpool L69 3BX, UK, Department of Population Health and Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK, Health Economics and Systems Group, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK and Health Economics Unit, University of Cape Town, Observatory 7925, South Africa Institute for Global Health, University College London, London WC1N 1EH, UK, Maternal and Child Health Intervention Research Group, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK, Human Development Research Foundation, Islamabad 44000, Pakistan, Epidemiology and Global Health, Umeä University, 90187 Umeå, Sweden, Institute of Psychology, Health & Society, Child Mental Health Unit, Unive