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Schrag A, Jahanshahi M, Quinn N. What contributes to the quality of life in patients with Parkinson's disease?J Neurol Nerosurg Psychiatry2000;69:308-12. The numbers given for the PDQ-39 in depressed patients (BDI>17) and non-depressed patients (BDI<18) given in table 2 (top row of data) on page 309 should read 49.8 (21.4) and 23.6 (14.3 instead of 39 (18.3) and 16.7 (11.2).
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