The first edition of Male Sexual Function: A Guide to Clinical Management was published in 2001. Since that time, two new oral medications for erectile dysfunction (r) (r) (ED), Vardenafil (Levitra ) and Tadalafil (Cialis ), have been introduced. Links between ED and lower urinary tract symptoms have been postulated, advances in the basic science of erectile physiology have occurred, and the appreciation of ED as a form of endothelial dysfunction and a harbinger of other more potentially lethal forms of vascular disease has become more widespread. In some instances, third-party payers have...