1. Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) MultiMedica, Via Fantoli 16/15, 20138 Milan, Italy
2. Department of Rehabilitation, Azienda Socio Sanitaria Territoriale (ASST) Gaetano Pini-Centro Specialistico Ortopedico Traumatologico (CTO), Piazza Cardinal Ferrari 1, 20122 Milan, Italy
3. Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20122 Milan, Italy
4. Consorzio Sanità (Co.S.), Via Marconi 3, 26015 Soresina, Italy
5. Medicoopliguria, Via Peschiera 33, 16121 Genova, Italy
6. Department of Clinical Medicine and Surgery, “Federico II” University of Naples, Via Sergio Pansini, 5, 80131 Naples, Italy