[1
]
Department of Otorhinolaryngology-Head & Neck Surgery, University of Maryland School
of Medicine, Baltimore.
[2
]
Department of Otorhinolaryngology-Head & Neck Surgery, University of Pennsylvania
School of Medicine, Philadelphia.
[3
]
Department of Otolaryngology-Head and Neck Surgery, Emory University Hospital Midtown,
Atlanta, Georgia.
[4
]
Department of Radiation Oncology, University of Pennsylvania School of Medicine, Philadelphia.
[5
]
Division of Hematology-Oncology, Department of Medicine, University of Pennsylvania
School of Medicine, Philadelphia.
[6
]
Department of Pathology and Laboratory Medicine, University of Pennsylvania School
of Medicine, Philadelphia.