title: MS: ALS, MS, MD--what's the difference?
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000473:pathology*; D006801:Humans; D008017:Life Expectancy; D009103:Multiple Sclerosis / Q000473:pathology*; D009136:Muscular Dystrophies / Q000473:pathology*