Fix the ALS repurposing search protocol and cutoff

Fix the ALS repurposing search protocol and cutoff

Record the databases, the registry sources, the search strings, the cutoff date, and the eligibility rules for randomized trials of repurposed drugs in ALS. Require registry records to be checked for unpublished results. Deliverable: A protocol file, a screening log with an exclusion reason per record, and the eligible trial list with citations and registration identifiers.