title: Tumours of the nasopharynx--Singapore 1969-1971 the presenting picture.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002277:Carcinoma / Q000453:epidemiology*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000453:epidemiology*; D012189:Retrospective Studies; D012737:Sex Factors; D012846:Singapore