1. Oncology Division, Internal Medicine Seoul National University College of Medicine Seoul South Korea
2. Medical Oncology Department Hacetteppe University Ankara Turkey
3. Onco‐chirurgie University Hospital Geneva Geneva Switzerland
4. Biostatistics Sanofi Chilly‐Mazarin France
5. Thoraco‐abdominal Oncosurgical Department Clinical Hospital of the President Administration Moscow Russia
6. Division of General Surgery Taipei Veterans General Hospital Taipei Taiwan
7. Division of Cancer Medicine and Departments of Medicine and Oncology University of Melbourne, Peter MacCallum Cancer Centre Melbourne Victoria Australia