1. University of Oxford, UK.

2. STANFORD UNIVERSITY, USA.

3. MASSACHUSETTS iNSTITUTE OF TECHNOLOGY (MIT), USA.

4. HARVARD UNIVERSITY, USA.

5. UNIVERSITY OF CAMBRIDGE, UK.

6. PRINCETON UNIVERSITY, USA.

7. CALIFORNIA INSTITUTE OF TECHNOLOGY, USA.

8. IMPERIAL COLLEGE LONDON, UK.

9. UNIVERSITY OF CALIFORNIA, BERKELEY, USA.

10. YALE UNIVERSITY , USA.