[Statistical study on malignant tumors in young persons].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007564:Japan; D007822:Laryngeal Neoplasms / Q000453:epidemiology*; D008441:Maxillary Neoplasms / Q000453:epidemiology*; D009669:Nose Neoplasms / Q000453:epidemiology*; D010610:Pharyngeal Neoplasms / Q000453:epidemiology*