Double-blind, randomized controlled trial comparing the use of microneedling alone vs chemical peeling alone vs a combination of microneedling and chemical peeling in the treatment of atrophic post-acne scars. An assessment of clinical effectiveness and patients’ quality-of-life - Pakla-Misiur, Agata; Grochowiec, Marcelina; Lesiak, Aleksandra; Bednarski, Igor (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2021)