Endothelial nitric oxide synthase genotypes and haplotypes modify the responses to sildenafil in patients with erectile dysfunction - Muniz, J. J.; Lacchini, Riccardo; Rinaldi, T. O.; Nobre, Y. T. D. A.; Cologna, Adaulto José; Martins, Antonio Carlos Pereira; Tanus-Santos, José Eduardo (The Pharmacogenomics Journal, 2011)