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| Methods | Randomization method not stated Blinding uncertain Lost to follow‐up not mentioned | |
| Participants | 62 pts; 37 m, 25 f; age 29‐71 yrs Chengdu Sichuan, China | |
| Interventions | Exp: Polylactic acid membrane Ctl: Nil |
|
| Outcomes | Surgeon rating | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Unclear risk | B ‐ Unclear |
