Demma, A., C. . Suitner, E. . Ferruzza, C. Nicolini, and M. Donini. “The Indirect Effect of a Focus Group for Psoriatic Patients on Their Caregivers”. Research in Psychotherapy: Psychopathology, Process and Outcome, vol. 24, no. 1, Mar. 2021, doi:10.4081/ripppo.2021.486.