Validity of spiral analysis in early Parkinson's disease.
Saunders-Pullman R, Derby C, Stanley K, Floyd A, Bressman S, Lipton RB, Deligtisch A, Severt L, Yu Q, Kurtis M, Pullman SL.
Saunders-Pullman R, et al. Among authors: severt l.
Mov Disord. 2008 Mar 15;23(4):531-7. doi: 10.1002/mds.21874.
Mov Disord. 2008.
PMID: 18074362