Nigeria: study of non-state providers of basic services * Larbi, George; Adelabu, Modupe; Rose, Pauline; Jawara, Dawda; Nwaorgu, Obioma; Vyas, Seema; University of Birmingham, School of Public Policy; University of Birmingham, International Development Department; London School of Hygiene and Tropical Medicine, Health Policy Unit; Water, Engineering and Development Centre (WEDC); Nnamdi Azikiwe University, Department of Parasitology and Entomology; Obafemi Awolowo University, Dept of Education Administration and Planning; University of Sussex, Centre for International Education