About the Authors
Department of Otorhinolaryngology, The First Affiliated Hospital of Sun Yat–sen University, Otorhinolaryngology Institute, Sun Yat–sen University, Guangzhou, China
Department of Biostatistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
The authors have declared that no competing interests exist.
Conceived and designed the experiments: WBL HQ JL. Performed the experiments: HQ JL HLX WQY YPZ. Analyzed the data: HQ JL HLX. Contributed reagents/materials/analysis tools: WBL. Wrote the paper: HQ WBL YPZ JL HLX WQY.