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Table 1 Search strategy

From: Collaboration in orthodontic clinical trials: prevalence and association with sample size and funding

Embase® search query
1 orthodontic$ (75,005)
2 #1 AND (‘clinical trial’/de OR ‘controlled clinical trial’/de OR ‘prospective study’/de OR ‘randomized controlled trial’/de) AND ‘article’/it (3360)
3 #1 AND (‘clinical trial’/de OR ‘controlled clinical trial’/de OR ‘prospective study’/de OR ‘randomized controlled trial’/de) AND ‘article’/it AND ‘human’/de AND (2013:py OR 2014:py OR 2015:py OR 2016:py OR 2017:py) (1008)