1. University of Arkansas, College of Medicine, Little Rock, AR
2. Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, AR
3. Department of Otolaryngology–Head and Neck Surgery, Indianapolis VA Medical Center and Indiana University School of Medicine, Indianapolis, IN
4. private practice, Jefferson, LA
5. Department of Otolaryngology–Head and Neck Surgery, University of Arkansas for Medical Sciences, Little Rock, AR