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Table 3 Number of included articles by country source(s) of patients/samples

From: Prevalence of human papillomavirus in head and neck cancers in European populations: a meta-analysis

Country source(s) of patients/samples Number of articles
Czech Republic 3
Denmark 1
Finland 1
Finland, Norway and Sweden 1
France 1
Germany 9
Germany and Greece 1
Hungary 4
Italy 7
Lithuania 1
The Netherlands 1
Norway, Sweden and the UK 1
Poland 1
Scotland 1
Slovenia 1
Sweden 2
Turkey 1
UK 1
Unclear 1
Total 39