Elsevier is an international multimedia publishing group in the Netherlands. ElsevierScienceDirect database contains more than 2,500 kinds of periodicals and books 1 1000 volumes, most of which are included by SCI, SSCI and EI. It is an internationally recognized high-grade academic journal.

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Elsevier is one of the largest publishers of medical and other scientific documents in the world, which belongs to Reed Elsevier Group and is headquartered in Amsterdam.

Elsevier's predecessor can be traced back to16th century, while the modern company started from 1880. Its publications include the academic journals The Lancet, Tetrahedron, Cell and the textbook Gray's Anatomy. Every year, 250,000 papers are published in the journals published by Elsevier.

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