The 4,844 journals being indexed for MEDLINE as of January 2005 are listed in four sections: (1) Alphabetic listing by abbreviated title, followed by full title; (2) Alphabetic listing by full title, followed by abbreviated title; (3) Alphabetic listing by subject field; and (4) Alphabetic listing by country of publication. MEDLINE is the National Library of Medicine’s database.

Issues for 1977-1979 include also Special List journals being indexed in cooperation with other institutions. Citations from these journals appear in other MEDLARS bibliographies and in MEDLING, but not in Index medicus.