Niewinna, P., K. Kołodziej, M. Żuchowski, D. Mańdziuk, P. Zaroda, P. Dąda, P. Pawlik, W. Kołodziej, J. Wawrzkowicz, and M. Korga. “Acne During Covid-19-The Effect of Pandemic and Quarantine on Skin Care of Patients With Acne”. Quality in Sport, vol. 15, July 2024, p. 51982, doi:10.12775/QS.2024.15.51982.