1. University of Oklahoma College of Medicine; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma U.S.A.
2. Department of Radiological Sciences; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma U.S.A.
3. Department of Pathology; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma U.S.A.
4. Department of Otorhinolaryngology; University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma U.S.A.