Impaired endothelium-dependent vascular responses of retinal and intrarenal arteries in patients with type 2 diabetes. - Kawagishi,T.; Matsuyoshi,M.; Emoto,M.; Taniwaki,H.; Kanda,H.; Okuno,Y.; Inaba,M.; Ishimura,E.; Nishizawa,Y.; Morii,H. (Arterioskler Thromb Vasc Biol, 1999)