1659-1321 1659-1321 S1659-13212015000200315 10.15517/am.v26i2.19324 PA PA PA 00 12 2015 00 12 2015 26 2 315 321

2003 Volum. VI 185-92 2012 3 6 6 1129-44 2004 62 622-9 1999 2 67-72 1999 18 to 21 april 1999 Porto Alegre, Brasil 83 2004 2005 2004 14 261-8 2006 2000 25-9