1. Michigan Healthcare Professionals / 21st Century Oncology; Farmington Hills; Michigan
2. Department of Radiation Oncology; University of Texas M.D. Anderson Cancer Center; Houston; Texas
3. Department of Radiation Oncology; Willis-Knighton Health System; Shreveport; Louisiana
4. Department of Radiation Oncology; Summa Health System; Akron; Ohio
5. Department of Radiation Oncology; Oakland University William Beaumont School of Medicine; Beaumont Health System; Royal Oak; Michigan
6. Advanced Diagnostics Laboratory; Redford; Michigan