“…The fnal results of the search in Medline (via
PubMed), EMbase, EBSCOhost, The Cochrane Library, SciELO, and BBO were 77, 65, 17, 3, 4,
and 7 studies, respectively. After the primary review, 44 studies 2-8,14-16,20,22,26-30,35,40,50,52,55-57,62-64,67,68,71,72,80,85,89,95,97,98,102,104,105,107,113-115 were
considered relevant, and 40 studies 1,9,10,13,19,24,25,31,34,38,42-44,46-49,51,53,54,58-60,65,66,69,75-79,81,83,86,94,103,106,110-112 were irrelevant. Inter-observer agreement (Cohen
kappa) was 0.93.…”