Web of Science, a database that provides quick and powerful access to the world's leading citation databases and sciences, social sciences, arts, and humanities research content. (Includes: Grants Index [1953-present], BIOSIS Citation Index [1926-present], KCI-Korean Journal Database [1980-present], Medline [1950-present], Preprints Citation Index [1991-present], ProQuest Dissertations and Abstracts [1637-present], SciELO Citation Index [2002-present], Web of Science Core Collection: Science Citation Index Expanded [1900-present]).