EPConDB: a web resource for gene expression related to pancreatic development, beta-cell function and diabetes. - Joan M. Mazzarelli; John Brestelli; Regina K. Gorski; Junmin Liu; Elisabetta Manduchi; Deborah F. Pinney; Jonathan Schug; Peter White; Klaus H. Kaestner; Christian J. Stoeckert Jr. (Nucleic Acids Res., 2007)