The Evaluation of Effectiveness and Safety of Guselkumab in Patients with Psoriatic Arthritis in a Prospective Multicentre “Real-Life” Cohort Study oleh Piero Ruscitti, Giulia Cataldi, Martina Gentile, Alice Dionisi, Paola Volpe, Annacarla Finucci, Lucrezia Verardi, Claudia Di Muzio, Noemi Italiano, Eleonora Celletti, Myriam Di Penta, Ilenia Di Cola, Alessandra Marrelli, Alessia Alfonsi, Francesco Delle Monache, Francesco Cipollone, Marco Gabini, Paola Cipriani