title: [The fourth edition of WHO classification of tumours of bone: an introduction].
authors.forename: Chao-fu
authors.initials: CF
authors.lastname: Wang
authors.affiliation: E-mail: xiongzengzhu@126.com.
authors.forename: Xiong-zeng
authors.initials: XZ
authors.lastname: Zhu
mesh_terms: D001859:Bone Neoplasms / Q000145:classification*; D002965:Classification / Q000379:methods*; D006801:Humans; D014944:World Health Organization