SÃO PAULO, BRAZIL - The neighborhood of Perdizes, in the west zone of the capital of São Paulo, records 1.1 deaths per thousand live births. In Marsilac, a rural district in the far south of the city, the rate is approximately 23 times higher: 24.6 children die before completing one year of age in each group of one thousand live births. The comparison is part of the Early Childhood Inequality Map, released . . .