Hoon Kwon, H. et al. 2020. Combination Treatment with Human Adipose Tissue Stem Cell-derived Exosomes and Fractional CO2 Laser for Acne Scars: A 12-week Prospective, Double-blind, Randomized, Split-face Study. Acta Dermato-Venereologica. 100, 18 (Nov. 2020), 1–8. DOI:https://doi.org/10.2340/00015555-3666.