1. Department of Oncology, King Saud bin Abdulaziz University for Health Sciences and King Abdullah International Medical Research Center, Riyadh, Kingdom of Saudi Arabia
2. Ankara University School of Medicine, Department of Medical Oncology, Ankara, Turkey
3. European Institute of Oncology, Istituto di Ricovero e Cura a Carattere Scientifico, and University of Milan, Milan, Italy
4. Fundación ECO, Madrid, Spain
5. King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
6. Hygeia Hospital, Athens, Greece
7. Radiation Oncology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
8. National Institute of Oncology, Mohammed V University, Rabat, Morocco
9. Fiona Stanley Hospital, Perth, Western Australia, Australia
10. Manila Central University-Filemon D. Tanchoco Medical Foundation Hospital, Caloocan City, Philippines
11. Núcleo de Oncologia da Bahia, Grupo Oncoclínicas, Salvador, Bahia, Brazil
12. King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Kingdom of Saudi Arabia
13. University of Maryland School of Medicine, Baltimore, MD