“…Of the 17 studies analysed, six were experimental studies -randomised control trials (Poleshuck et al, 2014;McCracken, Sato & Taylor, 2013;Tse, Vong & Tang, 2013;Dear et al, 2013;Frich et al, 2012;Chen & Francis, 2010) and eleven were pseudo-randomised trials (Fullen et al, 2013;Lattie et al, 2013;Nash et al, 2013;Taloyan, Alinaghizadeh & Löfvander, 2013;Tan et al, 2013;Nicholas et al, 2011;Bremander, Holmström & Bergman, 2010;Darchuk et al, 2010;Samwel et al, 2009;Unützer et al, 2008;Field et al, 2007). Based on our methodological quality instruments, we concluded that all the studies presented a high level of evidence.…”