“…The failure of empirical research in this area makes it necessary to couple that sort of investigation with clinical research. 7 E.g Verissimo, 2000;Barros et al, 2005;D'Abreu, 2006;Rocha, 2009;Marchon, 2006Marchon, , 2009Ribeiro, 2007;Gus, 2007;Paz, 2007b;Churcher, 2008;Ivey, 2008;Wieland, 2008;Borensztejn, 2009;Lothane, 2009;Luz, 2009;Galipeau, 2009;Schreck, 2010;Gheller, 2010;Brown, 2010..…”