[1] Univ S Florida, Dept Otolaryngol Head & Neck Surg, Div Facial Plast & Reconstruct Surg, 12901 Bruce B Downs Blvd,MDC73, Tampa, FL 66612 USA
[2] Med Affairs & Res Roman Hlth Ventures, New York, NY USA
[3] Univ Kentucky, Dept Otolaryngol Head & Neck Surg, Dept Microbiol Immunol & Mol Genet, Dept Internal Med,Div Infect Dis, Lexington, KY USA
[4] Univ KwaZulu Natal, Sch Clin Med, Durban, South Africa