1. North Shore University Hospital, Manhasset, New York.
2. Hartford Hospital, Hartford, and the University of Connecticut School of Medicine, Farmington, Connecticut.
3. University of Miami Miller School of Medicine, Miami, Florida.
4. Ohio State University Medical Center, Columbus, Ohio.
5. University at Buffalo Schools of Medicine and Public Health and Buffalo General Hospital, Buffalo, New York.
6. Emory University School of Medicine, Atlanta, Georgia.