Endothelium-dependent relaxation in response to Poly-L-Argini in canine coronary arteries.Implications about hyperpolarization as a mecanism of vasodilatation - Evora, Paulo R. B.; Pearson, Paul J.; Rodrigues, Alfredo José; Viaro, Fernando; Schaff, Hartzell (Arquivos Brasileiros de Cardiologia, 2003)