^aSerra Hunter Program, Unit of Psychological Medicine, Department of Medicine, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain

^bDepartment of Rehabilitation Medicine, Maastricht University, Maastricht, the Netherlands

^cDepartment of Anesthesiology, Perioperative, and Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, United States

^*Corresponding author. Address: Unit of Psychological Medicine, Department of Medicine, School of Medicine and Health Sciences, University of Barcelona, Casanova, 143, Ala Nord, 5a Planta, Barcelona 08036, Spain. Tel.: + 34 639019799. E-mail address: [email protected] (M. López-Solà).

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