title: Classification of ALS--do we know enough?
authors.forename: R
authors.initials: R
authors.lastname: Dengler
authors.forename: M
authors.initials: M
authors.lastname: Tröger
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000145:classification*; D010244:Bulbar Palsy, Progressive / Q000145:classification; D006801:Humans; D016472:Motor Neuron Disease / Q000145:classification