Content previously grouped by subject-orientation is now grouped by publication type. This is no longer the case. There is now increased coverage of life sciences and the fields of history of medicine, health technology assessment, space, bioethics, and population studies. The database contains bibliographic citations and author abstracts from more than 4,300 biomedical journals published in the United States and 70 other countries. The file contains approximately 11 million records dating back to the mid-1960's, with approximately 450,000 records expected to be added in 2001.
Coverage is worldwide, but most records are from English-language sources or have English abstracts.
A license agreement is not needed for sample data. Small amounts of data may be retrieved for redistribution without entering into a formal licensing agreement. See Information on Copyright for additional details. Files containing in-process, maintained, and deleted records are available daily. NLM bibliographic records for serials, monographs, audiovisuals, computer software, electronic resources and other materials are available in MARC 21 communications format on a subscription basis.