{"sources":[{"source_name":"PubMed","count":2582},{"source_name":"OpenAlex","count":1174},{"source_name":"Crossref","count":420},{"source_name":"ClinicalTrials.gov","count":308},{"source_name":"Europe PMC","count":237},{"source_name":"PsyArXiv","count":186},{"source_name":"bioRxiv","count":128},{"source_name":"medRxiv","count":44}]}