1. Department of Radiation Oncology, Baylor College of Medicine, Houston, Texas, USA
2. Department of Radiology, Michigan State University College of Human Medicine/Ascension Providence Hospital, Southfield, Michigan, USA
3. Department of Internal Medicine, Michigan State University College of Human Medicine, East Lansing, Michigan, USA
4. Department of Internal Medicine, Michigan State University College of Osteopathic Medicine, East Lansing, Michigan, USA
5. Department of Internal Medicine, Ascension Providence Hospital, Southfield, MI, USA
6. Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA