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In the article entitled "Human Immunodeficiency Virus Type 1 Antigen in Cerebrospinal Fluid" published in the March issue of the Archives (1989;46:261-264), an error appeared on page 262, the first column, line 59. The value for the cutoff was stated to be 35 pg/mL; the correct cutoff value should be 25 pg/mL. The sentence should read as follows: "Quantities above a cutoff value of 25 pg/mL were considered positive."
Incorrect Value.—. Arch Neurol. 1989;46(11):1174. doi:10.1001/archneur.1989.00520470028020
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