H. Hoon Kwon, “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 Derm Venereol, vol. 100, no. 18, pp. 1–8, Nov. 2020.