title: AALSS.
authors.affiliation: Department of Neurology, Baylor College of Medicine, Houston, Texas, USA.
authors.forename: Albert
authors.initials: A
authors.lastname: Yen
authors.forename: Ericka
authors.initials: E
authors.lastname: Simpson
authors.forename: Lanny
authors.initials: L
authors.lastname: Haverkamp
authors.forename: Stanley
authors.initials: S
authors.lastname: Appel
mesh_terms: D000203:Activities of Daily Living; D000690:Amyotrophic Lateral Sclerosis / Q000473:pathology / Q000503:physiopathology* / Q000523:psychology*; D000704:Analysis of Variance; D010244:Bulbar Palsy, Progressive / Q000503:physiopathology; D018450:Disease Progression; D023381:Endpoint Determination; D006801:Humans; D015233:Models, Statistical; D018482:Muscle, Skeletal / Q000503:physiopathology; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012119:Respiration; D013997:Time Factors