1. Roswell Park Cancer Institute (AAH, PRM, ZJ, YEA, KAG), Buffalo, New York
2. Cairo University (AAH), Cairo, Egypt
3. Rijnstate Hospital (CJW), Arnhem, The Netherlands
4. Ankara Ataturk Training and Research Hospital (AEC), Yildirim Beyazit University, Ankara, Turkey
5. Guy's Hospital and King's College London School of Medicine (PD, MSK), London, United Kingdom