Early childhood outcomes after neonatal encephalopathy in Uganda: a cohort study by Tann, C, Webb, E, Lassman, R, Ssekyewa, J, Sewegaba, M, Musoke, M, Burgoine, K, Hagmann, C, Deane-Bowers, E, Norman, K, Milln, J, Kurinczuk, J, Elliott, A, Martinez-Biarge, M, Nakakeeto, M, Robertson, N, Cowan, F