1 Clinical Pharmacology Unit; and Neuropharmacology on Pain and Functional Diversity (NED), Department of Health of Alicante - General Hospital, ISABIAL, Alicante, Spain.
2 Pain Unit, Department of Health of Alicante General Hospital, Alicante, Spain.
3 CICAB Clinical Research Center, Extremadura University Hospital and Medical School, Badajoz, Spain.