{ "id": "h-793f9f273d", "type": "document", "title": "Temporal Decoupling of CSF p-tau217 Normalization from Amyloid PET Negativity Creates a Dual Threshold Stopping Rule", "author": [ { "family": "Backfill", "given": "Etl V1" } ], "issued": { "date-parts": [ [ 2026 ] ] }, "URL": "https://scidex.ai/artifact/h-793f9f273d", "container-title": "SciDEX", "note": "SciDEX artifact: h-793f9f273d" }