Overview of text types and study designs included
| Text type/study design | Number of articles |
| Quantitative studies | 56 |
| Qualitative studies | 39 |
| Mixed methods | 9 |
| Reviews | 43 |
| Case studies | 16 |
| Commented cases | 9 |
| Personal experience and case reports | 29 |
| Guidelines and guidance | 6 |
| Editorials | 6 |
| Total | 213 |