title: [Problems and tendencies in the study on head and neck tumors in Japan].
authors.forename: I
authors.initials: I
authors.lastname: HIROTO
mesh_terms: D006257:Head; D006258:Head and Neck Neoplasms; D006801:Humans; D007564:Japan; D012886:Skull; D012888:Skull Neoplasms
keywords: NECK/neoplasms; SKULL/neoplasms