Yale University, Yale University, USA

University of Cambridge, UK

4 Oxford University, Oxford University, UK

University of California, Berkeley

Imperial College London, UK

7 UCL (University College London) United Kingdom

University of Chicago

9 Massachusetts Institute of Technology, MIT

10 Columbia University, USA

1 1 University of Pennsylvania, USA

12 Princeton University Princeton University, USA

13 Duke University, USA

13=. Johns Hopkins University, USA.

15 Cornell University, USA

16 Australian National University Australia

17 Stanford university, USA

18 University of Michigan, USA

19 University of Tokyo, Japan

20 McGill University of Canada, McGill University of Canada

2 1 Carnegie Mellon University USA

King's College, University of London, UK.

University of Edinburgh, United Kingdom

24 Swiss Federal Institute of Technology Zurich ... Switzerland

25 Kyoto University Japan

26 University of Hong Kong University of Hong Kong

Brown University, USA

Paris Normal College, France? 0? 7 Paris Higher Normal School, France

The 29th session of the University of Manchester.

30 = National University of Singapore.