title: Letter from the Guest Editors.
authors.forename: M Ángeles
authors.initials: MÁ
authors.lastname: Fernández-Gil
authors.forename: Ramón
authors.initials: R
authors.lastname: Palacios Bote
mesh_terms: D001933:Brain Stem / Q000473:pathology*; D020526:Brain Stem Infarctions / Q000175:diagnosis*; D020295:Brain Stem Neoplasms / Q000175:diagnosis*; D003711:Demyelinating Diseases / Q000175:diagnosis*; D006801:Humans; D019636:Neurodegenerative Diseases / Q000175:diagnosis*; D059906:Neuroimaging / Q000379:methods*