“…Fifty seven percent of the studies did not specify the medication, class or substances included in the group (only mentioned, for instance, sedative hypnotics, without indicating any specific drug) (Costa-Dias et al, 2014;Pierce Jr. et al, 2013;Obayashi et al, 2013;Lamis et al, 2012;Chang et al, 2011;Bun, Serby, Friedmann, 2011;Mamun, Lim, 2009;Tanaka et al, 2008;Angalakuditi, Gomes, Coley, 2007;Vassalo et al, 2006;Krauss et al, 2005;Vassalo et al, 2004;Aisen, Deluca, Lawlor, 1992). Some articles focused their studies on all central nervous system medications (Lamis et al, 2012) (without establishing any distinction between the pharmacological groups).…”