1. Department of Anesthesiology and Pain Medicine Seoul National University School of Medicine Seoul Korea
2. Department of Medicine Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
3. Departments of Pharmacology, Clinical Epidemiology and Anesthesiology University of Santo Tomas Faculty of Medicine and Surgery and the UST Hospital Manila Philippines
4. Institute of Clinical Medicine School of Medicine National Yang‐Ming University Taipei Taiwan China
5. Division of Hematology and Oncology Department of Medicine Taipei Veterans General Hospital Taipei Taiwan China
6. Pain Management Service Raffles Hospital Singapore Singapore
7. Department of Clinical Oncology Beacon International Specialist Centre Selangor Malaysia
8. Sun Yat‐Sen University Cancer Center Guangzhou China
9. Mundipharma Research Ltd Cambridge United Kingdom
10. Mundipharma Pte Ltd Singapore Singapore