[1] DUKE UNIV,MED CTR,DEPT SURG,DURHAM,NC 27710
[2] DUKE UNIV,MED CTR,DEPT MED,DURHAM,NC 27710
[3] DUKE UNIV,MED CTR,DEPT PATHOL,DURHAM,NC 27710
[4] NORTHWESTERN UNIV,EVANSTON HOSP,DIV NEUROL,EVANSTON,IL 60201
[5] NORTHWESTERN UNIV,EVANSTON HOSP,DIV MED,EVANSTON,IL 60201
[6] UNIV N CAROLINA,N CAROLINA MEM HOSP,DIV NEUROSURG,CHAPEL HILL,NC 27514
[7] USN HOSP,DEPT PEDIAT,PORTSMOUTH,VA