If provided, compare the MD5 or SHA-256 hash of the downloaded file with the one listed on the official site.
If you must use a third-party file, scan it with updated antivirus software or upload it to VirusTotal before extracting.
Files from unofficial sources may be corrupted or outdated.
The official source for NLM datasets is the NLM Download Page . They provide data in standard formats (like XML) via HTTPS or FTP.
To ensure you are getting clean, verified data, you should always use official repositories:
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