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Giustino Varrassi, Antonella Paladini, and Filomena Puntillo are Editorial Board members of Pain and Therapy. They were not involved in the selection of peer reviewers for this manuscript nor in any of the subsequent editorial decisions.","order":1,"name":"Ethics","label":"Conflict of Interest","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"This study was performed in accordance with the ethical principles of the Declaration of Helsinki of 1964 and its later amendments and with the International Association for the Study of Pain (IASP) guidelines for pain research in humans. The study protocol was approved by the local Ethics Committee (Comitato Etico Locale \u201cGabriella Serio,\u201d IRCCS Istituto Tumori Giovanni Paolo II, Bari, Italy; protocol\/IRB no. C2832\/CEL\u2014STUDIO NGO 01). Written informed consent to participate was obtained from all individual participants. No identifiable individual patient data are reported; therefore, consent for publication was not applicable.","order":2,"name":"Ethics","label":"Ethical Approval","group":{"name":"EthicsHeading","label":"Declarations"}}]}}