1. Vertex Pharmaceuticals Inc., 50 Northern Ave, Boston, Massachusetts 02210, United States
2. Vertex Pharmaceuticals (Canada) Inc., 275 Armand-Frappier, Laval, Quebec H7V 4A7, Canada
3. Arrowhead Research Corporation, 465 Science Drive, Suite C, Madison, Wisconsin 53711, United States
4. Sage Therapeutics, 215 First
Street, Cambridge, Massachusetts 02141, United States