Konstantinopoulos, Angelis, Konstantinos Giannitsas, Spiros Raptis, and Petros Perimenis. 2007. “Endothelial Dysfunction, Erectile Dysfunction and Phosphodiesterase 5 Inhibitors. An Update of the Current Data and Future Perspectives”. Drug Target Insights 2 (1). https://doi.org/10.33393/dti.2007.1310.