Figures & data
Figure 1. Flow-chart for the systematic review process.
†multiple exclusion reasons may have occurred.
![Figure 1. Flow-chart for the systematic review process.](/cms/asset/6fe83e25-ed43-433f-880b-10f981ac9f76/cphm_a_2269497_f0001_b.gif)
Table 1. Assessment of quality according to the CASP criteria.
Table 2. Included articles.
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Figure 1. Flow-chart for the systematic review process.
Table 1. Assessment of quality according to the CASP criteria.
Table 2. Included articles.
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