1. Geisinger Health System, Danville, PA
2. Tehran Univ of Med Sciences, Tehran, Iran, Islamic Republic of
3. GEISINGER MEDICAL CENTER, Danville, PA
4. UNIVERSITY OF MESSINA, Messina, Italy
5. Regional Health Authority of Sicily, Sicily, Italy
6. PES Univ, Bangalore, India
7. Univ of Otago, Wellington, Wellington
8. Geisinger Health System, Dept of Neurology, Wellington Hosp, New Zealand
9. Univ of Athens, Athens
10. Geisinger, Danville, PA