1. Department of Global Pediatric Medicine, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
2. Division of Quality of Life and Palliative Care, Department of Oncology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
3. Instituto Nacional de Enfermedades Neoplásicas, Lima 15038, Peru
4. Hospital de Câncer Infantojuvenil de Barretos, Barretos 14784-400, Brazil
5. Grey’s Hospital, Pietermaritzburg 3201, South Africa
6. Philippines General Hospital, Manila 1000, Philippines
7. Division of Pediatric Pain, Palliative Care & Integrative Medicine, University of California San Francisco, San Francisco, CA 94143, USA
8. Division of Quality of Life and Pediatric Palliative Care, Stanford University, Palo Alto, CA 94305, USA