Breast Cancer, Metastatic

• The University of Arizona Cancer Center - North Campus — Tucson, Arizona, United States
• City of Hope — Duarte, California, United States
• UC San Diego Moores Cancer Center — La Jolla, California, United States
• UC Irvine Health - Chao Family Comprehensive Cancer Center — Orange, California, United States

• CMC Ambroise Paré Hartmann — Neuilly-sur-Seine, France

• European Institute of oncology — Milan, Italy

• Zhongnan Hospital of Wuhan University — Wuhan, Hubei, China

• Centro di Riferimento Oncologico IRCCS — Aviano, Italy
• Azienda Socio Sanitaria Territoriale degli Spedali Civili — Brescia, Italy
• Humanitas Istituto Clinico Catanese — Catania, Italy
• ASST Lariana - Ospedale Sant'Anna — Como, Italy

• University of California, San Francisco — San Francisco, California, United States

Not specified

• Army medical Cnter — Chongqing, Chongqing Municipality, China

• University of Southern California — Los Angeles, California, United States
• Northwestern University — Chicago, Illinois, United States
• University of Rochester Medical Center Wilmot Cancer Institute — Rochester, New York, United States
• UT MD Anderson Cancer Center — Houston, Texas, United States

• Department of Radiation Oncology: University of Rochester — Rochester, New York, United States