Collombat, P., Mansouri, A., Hecksher-Soerensen, J., Serup, P., Krull, J., Gradwohl, G., et al. (2003). Opposing actions of Arx and Pax4 in endocrine pancreas development. Genes & Development, 17(20), 2591-2603. Retrieved from http://genesdev.cshlp.org/content/17/20/2591.full.pdf+html.