Rat Genome Database (RGD): mapping disease onto the genome. - Simon N. Twigger; Jian Lu; Mary Shimoyama; Dan Chen; Dean Pasko; Hanping Long; Jessica Ginster; Chin-Fu Chen; Rajni Nigam; Anne E. Kwitek; Janan T. Eppig; Lois Maltais; et al. (Nucleic Acids Res., 2002)