Murasmita A, Meirina Mulia W, Maria Galuh K, Dita Eka N, Ervina Rosmarwati. Differences in Facial Skin Acidity Levels of Nurses in Sebelas Maret University Hospital, Before and After Surgical Mask Use During the COVID-19 Pandemic . Bioscmed [Internet]. 2023 Nov. 16 [cited 2026 Aug. 13];7(12):3851-4. Available from: https://bioscmed.com/index.php/bsm/article/view/897