1. University of Michigan, Ann Arbor, MI
2. Henry Ford Hospital, Troy, MI
3. Dartmouth-Hitchcock Medical Center, Cornish, NH
4. Department of Radiation Oncology, University of Michigan Health System, Ann Arbor, MI
5. Henry Ford Hospital, Detroit, MI
6. University of California, San Diego, La Jolla, CA
7. University of Michigan Health System, Ann Arbor, MI