[1] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Otolaryngol, Singapore, Singapore
[2] Natl Univ Singapore, Dept Biomed Engn, Singapore, Singapore
[3] ASTAR, Singapore Immunol Network SIgN, Singapore, Singapore
[4] Natl Univ Hosp Syst, Dept Otolaryngol Head & Neck Surg, Singapore, Singapore
[5] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Microbiol, Singapore, Singapore
[6] Shandong Univ, Dept Otolaryngol, Hosp 2, Jinan, Shandong, Peoples R China