1. Nasopharyngeal carcinoma: presenting symptoms and duration before diagnosis;Lee;Hong Kong Med J,1997
2. The enigmatic epidemiology of nasopharyngeal carcinoma;Chang;Cancer Epidemiol Biomarkers Prev,2006
3. Early recognition of nasopharyngeal cancer in adults with only otitis media with effusion;Ho;J Otolaryngol Head Neck Surg,2008
4. Adult-onset otitis media with effusion;Finkelstein;Arch Otolaryngol Head Neck Surg,1994
5. Secretory otitis media in the adult;Robinson;Clin Otolaryngol Allied Sci,1987