Table 1 Search and selection of articles
| Â | NEJM | JCO | Lancet | JAMA | CIRC | Total |
|---|---|---|---|---|---|---|
Selected papers via Pubmed search | 11 | 63 | 21 | 29 | 68 | 192 |
Included according to criteria after reviewing abstract | 7 | 22 | 12 | 19 | 45 | 105 |
Included according to criteria after reviewing full text article | 6 | 21 | 10 | 19 | 44 | 100 |
Randomly selected for review | 5 | 5 | 5 | 5 | 5 | 25 |