Zhang Y, Kropp BP, Moore P, Cowan R, Furness PD, Kolligian ME, Frey P, Cheng EY. Coculture of bladder urothelial and smooth muscle cells on small intestinal submucosa: potential applications for tissue engineering technology. J Urol. 2000 Sep; 164(3 Pt 2):928-34; discussion 934-5.