1 Allergology and Clinical Immunology Unit, Department of Internal Medicine, San Bartolomeo Hospital, University of Genoa, 19038 Sarzana, Italy.
2 Allergy and Clinical Immunology Unit, Department of Clinical and Experimental Medicine, University of Messina, Via Consolare Valeria, 98125 Messina, Italy.
Vitamin D (VD) is a fat-soluble vitamin considered essential for human health, and its levels are associated with the function and composition of the intestinal microbiome [...].