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Publications identified and retrieved for review.
| Study design |
Number of publications identified |
Number of publications retrieved and reviewed |
|---|---|---|
| Randomized clinical trial (RCT) | 3 | 3 |
| Nonrandomized, prospectively collected data, with control group | 4 | 4 |
| Nonrandomized, prospectively collected data, without control group | 1 | 1 |
| Controlled retrospectively collected data | 1 | 1 |
| Case series; no controls | 20 | 18 |
| Basic science | 68 | 66 |
|
| ||
| Total | 97 | 93 |
