title: A 44-year-old woman with difficulty walking.
authors.affiliation: Harvard Medical School, Boston, MA, USA.
authors.forename: L I
authors.initials: LI
authors.lastname: Iezzoni
mesh_terms: D000328:Adult; D000690:Amyotrophic Lateral Sclerosis / Q000503:physiopathology / Q000628:therapy; D006233:Persons with Disabilities / Q000523:psychology / Q000534:rehabilitation / Q000706:statistics & numerical data; D005260:Female; D005684:Gait; D006801:Humans; D007348:Insurance, Health; D012046:Rehabilitation / Q000191:economics; D012656:Self-Help Devices / Q000191:economics; D014481:United States / Q000453:epidemiology; D016138:Walking; D014910:Wheelchairs / Q000191:economics