1. Department of Anesthesiology, Perioperative, and Pain Medicine, Stanford University School of Medicine, Stanford, CA, USA
2. Department of Pediatric Hematology-Oncology, Lucile Packard Children’s Hospital Stanford, Palo Alto, CA, USA
3. Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
4. Department of Psychology & Centre for Pain Research, University of Bath, Bath, UK
5. Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
6. Department of Medical Oncology, Stanford University School of Medicine, Stanford, CA, USA