| First author | Randomization | Double blinding | Withdrawals and dropouts | Score |
|---|---|---|---|---|
| Li. | 2 | 1 | 1 | 4 |
| Luo | 2 | 1 | 1 | 4 |
| Chen | 2 | 1 | 1 | 4 |
| Gao | 2 | 1 | 1 | 4 |
| Karakas. | 2 | 2 | 0 | 4 |
| Jia | 2 | 2 | 1 | 5 |
| Kim | 2 | 1 | 1 | 4 |
| Loyoia | 2 | 2 | 1 | 5 |
| Yildiz | 2 | 2 | 1 | 5 |
| Tascioglu. | 2 | 2 | 1 | 5 |
| Cakir. | 2 | 2 | 0 | 4 |
| Huang (a) | 2 | 2 | 1 | 5 |
| Huang (b)() | 2 | 2 | 1 | 5 |
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