title: Response.
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Imai
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Tanaka
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Kakushima
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Kohei
authors.initials: K
authors.lastname: Takizawa
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsubayashi
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Kinichi
authors.initials: K
authors.lastname: Hotta
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Yamaguchi
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ono
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000401:mortality* / Q000601:surgery*; D002423:Cause of Death; D005260:Female; D006801:Humans; D008297:Male; D010610:Pharyngeal Neoplasms / Q000401:mortality* / Q000601:surgery*; D057832:Watchful Waiting