atabase resources of the National Center for Biotechnology Information: update.
David L. WheelerDeanna M. ChurchRon EdgarScott FederhenWolfgang HelmbergThomas L. MaddenJoan U. PontiusGregory D. SchulerLynn M. SchrimlEdwin SequeiraTugba O. SuzekTatiana A. TatusovaLukas WagnerPublished in: Nucleic Acids Res. (2004)