The following lists the major NLM electronic information resources. PubMed provides a MeSH browsing function for helping create and refine a search. Abstracts of the Clinical Study Protocols include a summary of the purpose of the study, recruiting status, criteria for patient participation, location of the trial, and specific contact information.
Users are able to search numerous databases with one query or select from a list of resources.
Registration is required and local fees may apply. The collections have been donated to NLM and contain published and unpublished items, including books, journal volumes, pamphlets, diaries, letters, manuscripts, photographs, audiotapes, video clips, and other materials.