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In the article entitled "The Familial Occurrence of Parkinson's Disease" that appeared in the November 1992 issue of the Archives (1992;49:1205-1207), errors appeared in certain stated patient populations. On page 1206, first column, line 26, a series was stated as having as 110 patients; the series had 127 patients. In Table 2, the number of patients given for the study by Duvoisin was 208; it should have been 207. Consequently, the total number of patients in Table 2 should have been 922, not 923.
Incorrect Patient Populations. Arch Neurol. 1993;50(2):153. doi:10.1001/archneur.1993.00540020031013
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