1. Barrow Neurological Institute Phoenix Arizona U.S.A
2. Bluegrass Epilepsy Research Lexington Kentucky U.S.A
3. Washington University in St. Louis St. Louis Missouri U.S.A
4. Neurological Clinic of Texas Dallas Texas U.S.A
5. The Chaim Sheba Medical Center Tel Hashomer Israel U.S.A
6. Hospital Dr. Sótero del Río Office of Medical Research Puente Alto Chile
7. NeuroZentrum Nymphenburg München Germany
8. Upsher‐Smith Laboratories Inc. Maple Grove Minnesota U.S.A
9. PPD Wilmington North Carolina U.S.A