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Table 1.

Search strategy exemplary for the database Pubmed, adjusted according to other electronic databases.

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Table 2.

Inclusion and exclusion criteria.

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Fig 1.

PRISMA flow diagram for systematic reviews.

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Table 3.

Characteristics of the included studies.

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Table 3 Expand

Table 4.

Characteristics of communication skills training interventions.

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Table 4 Expand