1. Department of Neurology; University of Alabama at Birmingham; Birmingham Alabama U.S.A.
2. Department of Neurology; Emory University; Atlanta Georgia U.S.A.
3. Department of Surgery; University of Alabama at Birmingham; Birmingham Alabama U.S.A.
4. Division of Preventive Medicine; University of Alabama at Birmingham; Birmingham Alabama U.S.A.
5. Department of Gynecology and Obstetrics; Emory University; Atlanta Georgia U.S.A.