1. Department of Otolaryngology–Head and Neck Surgery University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
2. Department of Biostatistics, School of Public Health University of Pittsburgh Pittsburgh Pennsylvania USA
3. Division of Hematology/Oncology, Hillman Cancer Center University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
4. Department of Radiation Oncology, Hillman Cancer Center University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
5. Department of Acute and Tertiary Care, School of Nursing University of Pittsburgh Pittsburgh Pennsylvania USA