Changes in putamen N-acetylaspartate and choline ratios in untreated and levodopa-treated Parkinson's disease: A proton magnetic resonance spectroscopy study

Neurology ◽  
1997 ◽  
Vol 49 (2) ◽  
pp. 438-444 ◽  
Author(s):  
C. M. Ellis ◽  
G. Lemmens ◽  
S.C. R. Williams ◽  
A. Simmons ◽  
J. Dawson ◽  
...  
AIDS ◽  
2007 ◽  
Vol 21 (14) ◽  
pp. 1877-1886 ◽  
Author(s):  
Giovanni Schifitto ◽  
Bradford A Navia ◽  
Constantin T Yiannoutsos ◽  
Christina M Marra ◽  
Linda Chang ◽  
...  

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