Authors: Aris T. Papageorghiou, Eric O. Ohuma, Douglas G. Altman, Tullia Todros, Leila Cheikh Ismail, Ann Lambert, Yasmin A. Jaffer, Enrico Bertino, Michael G. Gravett, Manorama Purwar, J. Alison Noble, Ruyan Pang, César G. Victora, Fernando C. Barros, Maria Carvalho, Laurent Salomon, Zulfiqar A Bhutta, Stephen Kennedy, José Villar - The Lancet 2014 cited by 875