Table 1.

Search strategy used in PubMed to identify randomized trials in SSc

‘Clinical Trial’ [Publication Type] OR ‘Randomized Controlled Trial’ [Publication Type] OR ‘randomized’ [tiab] OR ‘placebo’ [tiab] OR ‘drug therapy’ [sh] OR randomly[tiab] OR trial[tiab] OR groups[tiab] OR ‘Clinical Trials as Topic’ [Mesh] OR ‘Research Design’ [Mesh] OR ‘Epidemiologic Research Design’ [Mesh] OR ‘Epidemiologic Studies’ [Mesh] OR ‘research design’ [text word] OR ‘case control’ [text word] OR ‘cohort’ [text word] OR ‘cross sectional’ [text word]) AND (‘1995’ [Publication Date]: ‘3000’ [Publication Date]) NOT (‘animals’ [MeSH] NOT ‘humans’[MeSH])