1. Pfizer, Inc., Cambridge, Massachusetts.
2. Independent Consultant, San Francisco, California.
3. Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts.
4. Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts.
5. PTC Therapeutics Inc., South Plainfield, New Jersey.
6. Istituto di Genetica Medica, Università Cattolica del Sacro Cuore, Roma, Italy.
7. PharmOptima LLC., Portage, Michigan.
8. Families of SMA, Elk Grove Village, Illinois.