Table 2

Active Institutes

Institutes	Centrality	Amount
University of Michigan*	0.27	121
Oxford University*	0.24	123
University of Colombia*	0.24	52
Chinese Academy of Sciences*	0.21	180
King Saud University*	0.14	168
Harvard University Medical School*	0.11	177
Duke University*	0.1	85
MIT*	0.1	74
New York University	0.07	65
Johns Hopkins University	0.07	95
Stanford University	0.06	150
University of Melbourne	0.06	74
Imperial College London	0.06	82
University of Cambridge	0.05	55
National University Singapore	0.04	87
Yale University	0.04	57
University of Toronto	0.03	100
Washington University	0.03	72
Vanderbilt University	0.03	49
Wuhan University	0.03	50

(Pivotal points: C≥0.1).