Kamel, H.M.H., Abdel-Mohesen, A.S., Gomaa, A.A.-A. and Mahmoud, M.T. 2022. Risk factors of acne vulgaris in preparatory school students in Fayoum City. International journal of health sciences. 6, S4 (Aug. 2022), 10686–10699. DOI:https://doi.org/10.53730/ijhs.v6nS4.11379.