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