1. University of Khartoum, Khartoum, Sudan
2. H. Lee Moffitt Cancer Center, Tampa, FL, USA
3. University of Nottingham, Sutton Bonington, Leicestershire, Nottingham, UK
4. Unizah Pharmacy College, Qassim University, Unizah, AL-Qassim, King of Saudi Arabia
5. Omdurman Islamic University, Omdurman, Sudan
6. Institute of Clinical Biology and Metabolism, Vitoria, Spain
7. University of Bari, Bari, Italy