title: Letter in response to David N. Louis et al, International Society of Neuropathology-Haarlem Consensus Guidelines for Nervous System Tumor Classification and Grading, Brain Pathology, doi: 10.1111/bpa.12171.
authors.affiliation: Institute of Neurology, Medical University of Vienna, Vienna, Austria.
authors.forename: Johannes
authors.initials: J
authors.lastname: Hainfellner
authors.forename: David N
authors.initials: DN
authors.lastname: Louis
authors.forename: Arie
authors.initials: A
authors.lastname: Perry
authors.forename: Pieter
authors.initials: P
authors.lastname: Wesseling
mesh_terms: D006801:Humans; D009423:Nervous System Neoplasms / Q000145:classification* / Q000175:diagnosis*