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Standardized mean concentration for each CSF protocol and analyte. Standardized mean concentrations (±95% confidence intervals) for each CSF protocol, ordered from the highest to the lowest standardized concentration using protocol 7 as the reference. Numbers on the x-axis are linked to the numbers in the collection protocol (Fig. 1). Effect sizes and p-values are described in Supplementary Table 4. LoB, low binding; PP, polypropylene.
