Human Gene-Centric Databases at the Weizmann Institute of Science: GeneCards, UDB, CroW 21 and HORDE. - Marilyn Safran; Vered Chalifa-Caspi; Orit Shmueli; Tsviya Olender; Michal Lapidot; Naomi Rosen; Michael Shmoish; Yakov Peter; Gustavo Glusman; Ester Feldmesser; Avital Adato; Inga Peter; et al. (Nucleic Acids Res., 2003)