1. Department of Otolaryngology – Head and Neck Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A.
2. Department of Orthopedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A.
3. School of Medicine University of Pittsburgh Pittsburgh Pennsylvania U.S.A.
4. Department of Physical Medicine and Rehabilitation University of Pittsburgh Pittsburgh Pennsylvania U.S.A.
5. Department of Acute and Tertiary Care University of Pittsburgh Pittsburgh Pennsylvania U.S.A.