WHO antenatal care randomised trial for the evaluation of a new model of routine antenatal care. - Villar,J.; Baáqeel,H.; Piaggio,G.; Lumbiganon,P.; Miguel Belizan,J.; Farnot,U.; Al-Mazrou,Y.; Carroli,G.; Pinol,A.; Donner,A.; Langer,A.; Nigenda,G.; et al. (Lancet, 2001)