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APearson product-moment correlation coefficient. BBaseline (off-state) CBF and CMR values. CΔCBF/ΔCMR represent [ON-OFF] differences for CBF and CMR with levodopa infusion. Significant correlations at *P < 0.05, **P < 0.01, ***P < 0.001. LDD(w), weight-corrected levodopa daily dose. UPDRS, Unified Parkinson’s Disease Rating Scale motor ratings.
