How lockdown measures, during COVID-19 pandemic, matter on psoriatic patient’s perception: Study on 600 patients on biologic therapy oleh N. Bernardini, N. Skroza, A. Spagnoli, A. Marchesiello, V. Balduzzi, E. Tolino, A. Mambrin, S. Michelini, P. Maddalena, S. Volpe, I. Proietti, A. Vestri, C. Potenza