Utility of Fecal Calprotectin Levels for the Diagnosis of Inflammatory Bowel Disease in Patients with Spondyloarthritis - Espinosa, Maria; Ramos Giraldez, Consuelo; Merino, Carolina; Ruiz Antoran, Belen; Campos, Jose; Barbadillo, Carmen; Godoy, Hilda; Agudo, Belen; Gonzalez, Yago; Luis Andreu, Jose; Sanz, Jesus (Arthritis & Rheumatology, 2018)