M. Habous - Elaj medical centres, KSA, Urology, Jedda, Saudi Arabia
S. Mahmoud - Elaj medical Centres, KSA, Jedda, Saudi Arabia
R. Tal - Memorial Sloan Kettering Cancer Center
O. Abdelwahab - Benha University
S. Binsaleh - King Saud University
J. Mulhall - Memorial Sloan Kettering Cancer Center