Erratum to: Vitamin D deficiency in patients with either rheumatic diseases or inflammatory bowel diseases on biologic therapy

Affiliations

• ¹ Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy.
• ² Medicina Interna, Reumatologia e Gastroenterologia, Ospedale Nuovo Regina Margherita, Via E. Morosini, 30, 00153, Rome, Italy. angelozullo66@yahoo.it.
• ³ Allergy, Clinical Immunology and Rheumatology, 'Sapienza' University of Rome, S. Andrea University Hospital, Rome, Italy.
• ⁴ Gastroenterology Unit, Sapienza University of Rome "Polo Pontino" Hospital, Latina, Italy.
• ⁵ Gastroenteroolgy Unit, 'RiUniti' Hospital, Foggia, Italy.
• ⁶ Rheumatology Unit, San Pietro Fatebenefratelli Hospital, Rome, Italy.