[1] UNIV MINNESOTA HOSP & CLIN,DEPT MED,MINNEAPOLIS,MN 55455
[2] UNIV MINNESOTA HOSP & CLIN,DEPT NEUROL,MINNEAPOLIS,MN 55455
[3] UNIV MINNESOTA HOSP & CLIN,DEPT OPHTHALMOL,MINNEAPOLIS,MN 55455
[4] UNIV MINNESOTA HOSP & CLIN,DEPT LAB MED & PATHOL,MINNEAPOLIS,MN 55455