An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a current valid OMB control number. Public reporting burden for this collection of information is estimated to average 4 minutes per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Your responses will be very useful in helping the NLM MeSH and MeSH RDF teams continue to improve how MeSH works for you. The survey is easy to complete in about four minutes. Please answer a few questions about how you use MeSH data. MeSH and MeSH RDF is still interested in your feedback regarding our products. Information regarding changes and updates to MeSH can be found at What's New in MeSH. MeSH MARC21 will be release in January 2020.

Production year 2020 MeSH in XML, RDF and ASCII have been release and are available for download from NLM. December 10, 2019: Production Year 2020 MeSH Available for Download in: XML, RDF and ASCII Formats.

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