1 Department of Surgical Sciences, University of Parma, Parma, Italy.
2 SIMPAR Group (Study in Multidisciplinary Pain Research), Florence, Italy.
3 Department of Surgical Sciences, University of Parma, Parma, Italy - mallegri@parmanesthesia.com.
4 Department of Anesthesiology, Intensive Care and Pain Therapy, University Hospital of Parma, Parma, Italy.
5 Department of Regional Anesthesia and Pain Therapy, San Donato Polyclinic and Institute for Research and Care, San Donato Milanese, Milan, Italy.
6 Department of Anesthesiology and Intensive Care, S. Croce e Carle Hospital, Cuneo, Italy.
7 Department of Anesthesiology and Intensive Care, Legnano Civil Hospital, Milan, Italy.
8 Department of Anesthesia and Reanimation, Padua Hospital, Padua, Italy.
9 Department of Anesthesiology and Intensive Care, Papa Giovanni XXIII Hospital, Bergamo, Italy.
10 Department of Anesthesia and Intensive Care, Campus Bio-Medico University, Rome Italy.
11 Department of Anesthesiology and Intensive Care, Arcispedale Santa Maria Nuova, Reggio Emilia Hospital, Reggio Emilia, Italy.
12 Anesthesia and Intensive Care Research Unit, Department of Biomedical and Neuromotor Sciences, University of Bologna, Rizzoli Orthopedic Institute, Bologna, Italy.