Differences in factors associated with initial growth, CD4, and viral load responses to ART in HIV-infected children in Kampala, Uganda, and the United Kingdom/Ireland. by Kekitiinwa, A, Lee, K, Walker, A, Maganda, A, Doerholt, K, Kitaka, S, Asiimwe, A, Judd, A, Musoke, P, Gibb, D