For instance, in the Steno 2 study, multifactorial risk intervention, including intensive diabetes treatment, angiotensin-converting enzyme inhibitors, antioxidants, statins, aspirin, and smoking cessation in a cohort of patients with microalbuminuria had a moderate effect on autonomic neuropathy at 4 and 8 years [16] and no effect on DPN after 7.8 years [15] and again at 13.3 years [16] of follow-up. Here, ACE is linked to diabetes mellitus.