Memorial Sloan-Kettering Cancer
Center,
New York (Dr Richard Gewanter).
John Hopkins Hospital, Baltimore, Maryland.
Dana-Farber Cancer Institute, Boston.
Mayo Clinic, Rochester.
UCLA Medical Center, Los Angeles.
University of Chicago Hospitals, Chicago.
Stanford University Hospital, Stanford, California.
Duke University Medical Center, Durham.
University of Washington Medical Center, Seattle, Washington.
Smilow Cancer Center, New Haven, CT.