If you must use a third-party file, scan it with updated antivirus software or upload it to VirusTotal before extracting.
The official source for NLM datasets is the NLM Download Page . They provide data in standard formats (like XML) via HTTPS or FTP. Download nlm2020 rar
If you found a link for "nlm2020.rar" on a third-party file-sharing site, please exercise extreme caution: If you must use a third-party file, scan
Only download software and large datasets from .gov , .edu , or verified official project websites. How to Proceed visit the MeSH Download page .
For the 2020 MeSH descriptors and terminology, visit the MeSH Download page .