Nur’aeny, N., Gurnida, D.A., Suwarsa, O. and Sufiawati, I. 2020. Serum Level of IL-6, Reactive Oxygen Species and Cortisol in Patients with Recurrent Aphthous Stomatitis related Imbalance Nutrition Intake and Atopy. Journal of Mathematical and Fundamental Sciences. 52, 3 (Dec. 2020), 286-296. DOI:https://doi.org/10.5614/j.math.fund.sci.2020.52.3.3.