Sopo SM, Cerchiara G, Bersani G, Monaco S, Romano A, Poscia A. The unpredictability of seasonal variations in serum vitamin D levels in children with asthma and/or rhinitis. Allergol Immunopathol [Internet]. 2019 Oct. 15 [cited 2026 Apr. 2];47(5):411-6. Available from: https://www.all-imm.com/index.php/aei/article/view/283