“…All patients at our impotence clinic undergo a comprehensive approach 17 regarding the etiology of the erectile dysfunction, including a case history, physical examination, blood laboratory studies, sexual case history (performed by a psychiatrist), single potential analysis of cavernous electrical activity (SPACE), 18 pharmacological testing 17 and Doppler ultrasound. 19 When indicated, 17 ernosometry and cavernosography, 20 penile angiography or somato-motor and/or autonomic neurological examinations.…”