1. Houston VA Health Services Research and Development Center; Michael E. DeBakey Veterans Affairs Medical Center; Houston Texas U.S.A.
2. ENT Section, Operative Care Line; Michael E. DeBakey Veterans Affairs Medical Center; Houston Texas U.S.A.
3. Bobby R. Alford Department of Otolaryngology Head and Neck Surgery; Baylor College of Medicine; Houston Texas U.S.A.
4. Department of Radiation Oncology; Baylor College of Medicine; Houston Texas U.S.A.
5. Hematology/Oncology Section, Medical Care Line; Michael E. DeBakey Veterans Affairs Medical Center; Houston Texas U.S.A.
6. Division of Hematology & Oncology, Department of Medicine; Baylor College of Medicine; Houston Texas U.S.A.