Effectiveness of patients’ involvement in a medical and nursing pain education programme: a protocol for an open-label randomised controlled trial including qualitative data oleh Francesca Rossi, Roberto D'Amico, Alice Serafini, Luca Ghirotto, Matías Eduardo Díaz Crescitelli, Maria Grazia Rossi, Sara Alberti, Erika Borellini, Annamaria Contini, Simone Cernesi, Paola Ferri, Davide Fornaciari, Linda Giugni, Fausta Lui, Riccardo Cuoghi Costantini, Valentino Santori, Maria Stella Padula