Table 1 Applying the NIH quality assessment tool for all the included studies
Study | Total score | Quality rating (good, fair, or poor) | Study | Total score | Quality rating (good, fair, or poor) |
|---|---|---|---|---|---|
Controlled interventional studies (score out of 14) | |||||
 Gorenstein, S. A | 11 | Good | Petrikov, S. S | 8 | Good |
 Levina, O. A | 10 | Fair |  |  |  |
Case series and case reports (score out of 9) | |||||
 Chen, R. Y | 6 | Fair | Guo, D. Z | 6 | Fair |
 Liang, Y | 7 | Good | Thibodeaux, K | 7 | Good |
 Xiao-Ling, Z | 7 | Good |  |  |  |