0185-1667 0185-1667 S0185-16672007000200117 Brazil 00 06 2007 00 06 2007 66 260 117 150

2004 2002 2002 2002 113 3 3 2003 1995 2003 2003 23 89 89 1999 11 11 2003 2002 2000 World Bank 2004 World Bank 2004