Kalayci, O., Besler, T., Kilinç, K., Sekerel, B. E., & Saraçlar, Y. (2000). Serum levels of antioxidant vitamins (alpha tocopherol, beta carotene, and ascorbic acid) in children with bronchial asthma. The Turkish Journal of Pediatrics, 42(1), 17-21. https://turkjpediatr.org/article/view/3092