Elsevier Inc..

Elsevier B.V..

Elsevier Masson s.r.l..

Elsevier B.V..

Higher Education Press Limited Company.

Birkhauser.

Elsevier Inc..

Royal Society of Chemistry.

Elsevier Ltd.

Bon View Publishing Pte Ltd.

John Wiley and Sons Inc.

KeAi Communications Co..

Company of Biologists Ltd.

American Association of Neurological Surgeons.

Springer Science and Business Media Deutschland GmbH.