1. F. Hoffmann-La Roche Ltd., pRED, Pharma Research & Early Development, Roche Innovation Center Basel, Grenzacherstrasse 124, 4070 Basel, Switzerland
2. PTC Therapeutics, Inc., 100 Corporate Court, South Plainfield, New Jersey 07080, United States
3. SMA Foundation, 888 Seventh Avenue, Suite 400, New York, New York 10019, United States
4. Section of Neurobiology, Department of Biological Sciences, University of Southern California, Los Angeles, California 90089, United States