title: Lack of efficacy of azathioprine in the treatment of axial arthritis complicating Crohn's disease.
authors.affiliation: Gastroenterology, University "Federico II" of Naples, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Rispo
authors.forename: Raffaele
authors.initials: R
authors.lastname: Scarpa
authors.forename: Maria
authors.initials: M
authors.lastname: Diaferia
authors.forename: Anna
authors.initials: A
authors.lastname: Testa
authors.forename: Fabiana
authors.initials: F
authors.lastname: Castiglione