Received: 27 May 2018
Accepted: 13 September 2019
First Online: 25 October 2019
Ethics approval and consent to participate
: The ethics committee of the university “Campus Bio Medico” of Rome approved the study and all patients gave written consent to participate.
: Written informed consent to publish this information was obtained from study participants. All the data are available for the consultation.
: UGL and GR are members of the Editorial Board of BMC Musculoskeletal Disorders. The remaining authors declare that they have no conflict of interest.