World Health Organization and knowledge translation in maternal, newborn, child and adolescent health and nutrition by STAGE (Strategic Technical Advisory Group of Experts), Duke, T, AlBuhairan, FS, Agarwal, K, Arora, NK, Arulkumaran, S, Bhutta, ZA, Binka, F, Castro, A, Claeson, M, Dao, B, Darmstadt, GL, English, M, Jardali, F, Merson, M, Ferrand, RA, Golden, A, Golden, MH, Homer, C, Jehan, F, Kabiru, CW, Kirkwood, B, Lawn, JE, Li, S, Patton, GC, Ruel, M, Sandall, J, Sachdev, HS, Tomlinson, M, Waiswa, P, Walker, D, Zlotkin, S