[1] OHIO STATE UNIV,COLL OPTOMETRY,COLUMBUS,OH 43210
[2] WASHINGTON UNIV,SCH MED,DEPT OPHTHALMOL & VISUAL SCI,ST LOUIS,MO 63130
[3] WASHINGTON UNIV,SCH MED,DIV BIOSTAT,ST LOUIS,MO 63130
[4] UNIV MISSOURI,SCH OPTOMETRY,ST LOUIS,MO 63121
[5] UNIV ILLINOIS,DEPT OPHTHALMOL,CHICAGO,IL 60680
[6] SO CALIF COLL OPTOMETRY,FULLERTON,CA