“…Of those 46 7 references, 18 were excluded with reasons (see Table S1 in the supplementary material that accompanies the online version of this article). Finally, 27 articles (Akiskal et al, 2005a;Akiskal et al, 2005b;Akiskal et al, 2005c;Akiyama et al, 2005;Bloink et al, 2005;Borkowska et al, 2010;Dolenc and Sprah, 2011;Dolenc et al, 2013;Erfurth et al, 2005;Fountoulakis et al, 2014;Hinic et al, 2013;Karam et al, 2005;Kawamura et al, 2010;Lin et al, 2013;Maremmani et al, 2011;Matsumoto et al, 2005;Naderer et al, 2015;Pompili et al, 2008;Preti et al, 2015;Preti et al, 2013;Preti et al, 2010;Ristic-Ignjatovic et al, 2014;Rozsa et al, 2006;Vahip et al, 2005;Victor et al, 2006;Woodruff et al, 2011;Yuan et al, 2015) were included in this systematic review. The PRISMA flowchart of study selection for this systematic review is provided in Figure 1.…”