Ghaly 2012.

Methods	RCT
Participants	30 patients (skin phenotypes III to V, mean age 32.7 years) with moderate to severe facial post‐acne scarring were randomly divided into 2 equal groups
Interventions	Group A received 2 ‐ 3 sessions with 2940‐nm ablative erbium: YAG laser at 4‐ to 8‐week intervals Group B underwent 6 ‐ 9 treatments with 1540‐nm non‐ablative fractional erbium laser at 4‐ to 6‐week intervals
Outcomes	The overall average clinical improvement Side effects (at 1, 2, and 3 months after the last session)
Notes	Abstract only. Abstract does not contain enough information for 'Risk of bias' assessment and completion of the Characteristics of included studies table