A.N.M. Kraay, M.K. Steele, ......., A. Boula, E.M. Mpabalwani, N.M. Kiulia, E Tsolenyanu, C. Enweronu-Laryea, A. Abebe, B. Beyene, M. Tefera, R. Willilo, N. Batmunkh, R. Pastore, J.M. Mwenda, S. Antoni, A.L. Cohen, V.E. Pitzer, B.A. Lopman