title: [The differential diagnosis of narrow band imaging for the polyp lesion on the vocal cord].
authors.affiliation: Department of Otorhinolaryngology, Wangjing Hospital, China Academy Chinese Medical Science, Beijing 100102, China.
authors.forename: W
authors.initials: W
authors.lastname: Feng
authors.affiliation: Department of Endoscope, Cancer Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100021, China.
authors.forename: X G
authors.initials: XG
authors.lastname: Ni