Salvatella Roberto, Irabedra Pilar, Sánchez Delia, Castellanos Luis G, Espinal Marcos
PAHO/WHO, Montevideo, Uruguay.
MERCOSUR health systems observatory, Montevideo 11200, Uruguay.
Lancet. 2013 Aug 3;382(9890):395-396. doi: 10.1016/S0140-6736(13)61671-2.