Circulating matrix metalloproteinases and their endogenous inhibitors in patients with erectile dysfunction - Muniz, J. J.; Lacchini, Riccardo; Belo, V. A.; Nobre, Y. T. D. A.; Tucci Júnior, Silvio; Martins, Antonio Carlos Pereira; Tanus-Santos, José Eduardo (International Journal of Impotence Research, 2012)