^aSydney Medical School, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia

^bDivision of Pain Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA, United States

^cDepartment of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States

^*Corresponding author. Address: Sydney Medical School, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Lvl 2 Douglas Bldg, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia. Tel.: +61 2 94631528. E-mail: [email protected] (C.E. Ashton-James).

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