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Randomized, placebo-controlled, parallel group versus crossover study designs for the study of dementia in Parkinson's disease
Mary E. Putt, Bernard RavinaVolume:
23
Year:
2002
Language:
english
Pages:
16
DOI:
10.1016/s0197-2456(01)00207-0
File:
PDF, 176 KB
english, 2002