Effect of ultra-low dose isotretinoin on treatment outcomes and recurrence risk of acne-induced pathological scars: A multicenter retrospective study

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Supplementary methods Supplementary Figure 1. Study population flowchart. Supplementary Figure 2 Distribution of treatment improvement levels in patients from the control group and isotretinoin group. Supplementary Figure 3. Recurrence free survival curves for acne induced PSs in patients treated with or without isotretinoin. Supplementary Table I Baseline and postoperative scar assessment characteristics of the study cohort. Supplementary Table II Summary of Treatment-Related Adverse Events. Supplementary Table III Five-point scale for assessing keloid treatment response.

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