19.Kamenova P. Improvement of insulin sensitivity in patients with type 2 diabetes mellitus after oral administration of alpha-lipoic acid. Hormones (Athens). Oct-Dec 2006;5(4):251-258. http://www.ncbi.nlm.nih.gov/pubmed/17178700
20.Ametov AS, Barinov A, Dyck PJ, et al. The sensory symptoms of diabetic polyneuropathy are improved with alpha-lipoic acid: the SYDNEY trial. Diabetes Care. 2003;26:770-776. http://www.ncbi.nlm.nih.gov/pubmed/12610036
21.Ziegler D, Ametov A, Barinov A, et al. Oral Treatment With alpha-lipoic Acid Improves Symptomatic Diabetic Polyneuropathy: The SYDNEY 2 trial. Diabetes Care . 2006;29:2365-2370. http://care.diabetesjournals.org/content/29/11/2365.abstract