1. University of Colorado School of Medicine; Aurora Colorado USA
2. Icahn School of Medicine at Mount Sinai; New York New York USA
3. Emory University School of Medicine; Atlanta Georgia USA
4. Emory Clinic; Atlanta Georgia USA
5. University of Alabama at Birmingham; Birmingham Alabama USA
6. Southeast Radiation Oncology Group; Charlotte North Carolina USA
7. H. Lee Moffitt Cancer Center; Tampa Florida USA
8. Northwestern University, Feinberg School of Medicine; Chicago Illinois USA
9. Winship Cancer Institute, Emory University School of Medicine; Atlanta Georgia USA