Penile Intracavernosal Stem Cells Therapy for Erectile Dysfunction

Inclusion Criteria: * Male 40 years old and older suffering from moderate to sever erectile dysfunction - Exclusion Criteria: * Inability to give informed consent or attend follow up * Severe diabetic neuropathy (to be defined ? Charcot joints, diabetic ulcers?) or other neuropathic disease * Viral disease from infectivity viewpoint * Major penile fibrosis or severe Peyronie's disease * Severe primary large vessel ED (defined as PSV less than 15cm/s after ICI) * Severe primary venous leakage ED (defined as EDV more than 10cm/s after ICI) * Prior systemic chemotherapy, or radiotherapy to donor or recipient area * Not in potentially active sexual relationship * Age less than 40 or over 70