Split-Sided Chest Study of Skin Rejuvenation Comparing Low-Energy, 1,927-nm Thulium Fractional Laser Treatment Prior to Photodynamic Therapy Versus Photodynamic Therapy Alone.

Comparison of improvements in erythema scores from baseline to Week 20 for FLT–PDT versus PDT alone showed a trend toward improvement for FLT–PDT versus PDT alone; however, this difference also was not statistically significant (+0.52 vs. +0.30 points, respectively; P = 0.70).

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