2175-3520 2175-3520 S2175-35202021000100131 10.23925/2175-3520.2021i52p131-135 Brazil Brazil 00 01 2021 00 01 2021 52 131 135 1998 2009 6 2010 2007 34 2014 3 2009 2015 2003 12-6 2003 2000 259-76 2016