1. University of Florida
2. University of Warsaw
3. Missouri University of Science and Technology
4. Embry-Riddle Aeronautical University
5. Tecnologico de Monterrey
6. University of Texas Rio Grande Valley
7. Université Côte d’Azur
8. Observatoire de la Côte d’Azur
9. Universidad de Guadalajara
10. Universitat de València
11. California Institute of Technology
12. Swinburne University of Technology
13. ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav)
14. University of Tennessee, Knoxville
15. Tribhuvan University
16. Villanova University
17. Università di Padova
18. INFN, Sezione di Padova
19. INFN, Sezione di Roma
20. Instituto de Ciencias Nucleares
21. Instituto de Física Teórica UAM/CSIC
22. University of Wisconsin–Milwaukee
23. University of Texas Rio Grande Valley, Brownsville
24. University of Notre Dame
25. University of British Columbia
26. Università di Roma “La Sapienza”
27. University of Wisconsin-Milwaukee