[1] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DIV HLTH SCI,DEPT MED,BOX 711,MCV STN,RICHMOND,VA 23298
[2] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DIV HLTH SCI,DEPT PHYSIOL,RICHMOND,VA 23298
[3] VET ADM LAKESIDE MED CTR,CHICAGO,IL 60611
[4] NORTHWESTERN UNIV,SCH MED,DEPT SURG,CHICAGO,IL 60611