title: [Letter: Betolvex and Vibeden].
mesh_terms: D000752:Anemia, Pernicious / Q000188:drug therapy*; D003038:Cobamides / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans
chemical_list: D003038:Cobamides
vernacular_title: Betolvex og Vibeden.