Serum samples were obtained at the indicated time points according to standard procedures and stored at −80 °C until use. Serum BD-tau and p-tau231 were measured on the Simoa HD-X platform (Quanterix) using validated in-house assays,11 (link),14 (link) and T-tau and NfL with Quanterix assays (Nos. 101552 and 103670, respectively).
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