Early and Mid-Term Ultrasound Response to Guselkumab in Psoriatic Arthritis: A Real-World Cohort from a Single Tertiary Rheumatology Center. - Messina, Filippo; Caimi, Massimo; Lucchetti, Linda; Bonifacio, Marco; Fiorino, Emanuele; Conforti, Alessandro (Journal of Clinical Medicine, 2026)