1. International Society of Proprioception and Posture, Turin, Italy
2. Proprioception Center, Via Valgioie 85-87, 10146 Turin, Italy
3. Epidemiology Unit, Local Health Unit TO3, Piemonte Region, Grugliasco, Italy
4. Sanitary District 2, Local Health Unit TO1, Piemonte Region, Turin, Italy
5. Department of Functional Rehabilitation, Local Health Unit TO1, Piemonte Region, Turin, Italy