Three-dimensional architecture of the enteric nervous system in homozygous endothelin-B-receptors (ETB) deficient (spotting lethal) rats compared to patients with Hirschsprung's disease - Boyen, Georg von; Wedel, Thilo; Dembowski, C.; Ehrenreich, H.; Singer, Manfred V.; Krammer, H. (Neurogastroenterology, 2000)