| Concepts | MM, AG, NA |
| Design | MM, AG, KFF |
| Definition of intellectual content | MM, NA, FMH, NG, NV |
| Literature search | MM, NA, FMH, NG, NV, AG |
| Clinical studies | MM, NA, FMH, MK, NG, NV |
| Data acquisition | MM, NA, MK |
| Data analysis | MM |
| Statistical analysis | MM |
| Manuscript preparation | MM, AG, KFF |
| Guarantor | MM |