Blood pressure and arterial stiffness in Kenyan adolescents with α+thalassemia by Etyang, A, Khayeka-Wandabwa, C, Kapesa, S, Muthumbi, E, Odipo, E, Wamukoya, M, Ngomi, N, Haregu, T, Kyobutungi, C, Tendwa, M, Makale, J, Macharia, A, Cruickshank, J, Smeeth, L, Scott, J, Williams, T