Lubrano di Scorpaniello E, Spadaro A. Unmet needs in outcome measures of Psoriatic Arthritis: focus on axial radiographic and nail involvement. Acta Biomed. 2013;84(2):87-93. Accessed May 1, 2026. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/2733