1. Department of Pediatric Otolaryngology, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA
2. Department of Otolaryngology, University of Pittsburgh, Pittsburgh, PA
3. Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA
4. Division of Geriatric Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
5. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA