Sopo, S. Miceli, G. Cerchiara, G. Bersani, S. Monaco, A. Romano, and A. Poscia. “The Unpredictability of Seasonal Variations in Serum Vitamin D Levels in Children With Asthma and Or Rhinitis”. Allergologia et Immunopathologia 47, no. 5 (October 15, 2019): 411–416. Accessed June 2, 2026. https://www.all-imm.com/index.php/aei/article/view/283.