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 |