string: …drug doses utilized in the present study were based on previous studies from our group and literature (Binfaré et al., 2009, 2010; Capra et al., 2010; Cooper et al., 1994; Cunha et al., 2008, in press; Machado et al., 2007, 2009; Mortensen and Amara, 2006; Richelson, 2003; Rodrigues et al., 2002).