Neoplasms, Unknown Primary

• National Naval Medical Center — Bethesda, Maryland, United States
• Warren Grant Magnuson Clinical Center - NCI Clinical Studies Support — Bethesda, Maryland, United States
• NCI - Center for Cancer Research — Bethesda, Maryland, United States

• Rigshospitalet — Copenhagen, Denmark

• Memorial Sloan-Kettering Cancer Center — New York, United States

• NYU Cancer Institute at New York University Medical Center — New York, United States

• NYU School of Medicine's Kaplan Comprehensive Cancer Center — New York, United States

Not specified

• Memorial Sloan-Kettering Cancer Center — New York, United States

• M D Anderson Cancer Center — Houston, Texas, United States

• Princess Margaret Hospital — Toronto, Ontario, Canada

• City of Hope Comprehensive Cancer Center — Duarte, California, United States
• University of California Davis Comprehensive Cancer Center — Sacramento, California, United States
• City of Hope South Pasadena — South Pasadena, California, United States
• Moffitt Cancer Center — Tampa, Florida, United States