1 Department of Otolaryngology-Head and Neck Surgery, University of California Irvine, Orange, California, USA.
2 Department of Otolaryngology-Head and Neck Surgery, University of California Davis, Sacramento, California, USA.
3 Department of Otolaryngology-Head and Neck Surgery, Centro Hospitalar Universitário de Santo António, Instituto de Ciências Biomédicas Abel Salazar-Porto University, Porto, Portugal.