Article ISI Lancet (2008)
Walley J, Lawn JE; Tinker A, de Francisco A; Chopra M, Rudan I; Bhutta ZA, Black RE; Epping-Jordan J, Ekman B; Flottorp SA, Haines A; Lavis J, Liljestrand J; Kidd M, Mant D; Patel V, Pantoja T; Rada G, Rohde J; Rifkin S, Souza NM; Treweek S, Wiysonge C.