Parkinsonism: onset, progression, and mortality. 1967.
Hoehn
M M
MM
Yahr
M D
MD
D017668:Age of Onset; D018450:Disease Progression; D049673:History, 20th Century; D006801:Humans; D020734:Parkinsonian Disorders / Q000209:etiology / Q000266:history* / Q000401:mortality