Lee Yu-Mi, Wolf Petra, Hauner Hans, and Skurk Thomas. “Effect of a Fermented Dietary Supplement Containing Chromium and Zinc on Metabolic Control in Patients With Type 2 Diabetes: A Randomized, Placebo-Controlled, Double-Blind Cross-over Study”. Food & Nutrition Research 600 (June 23, 2016). Accessed May 13, 2024. https://foodandnutritionresearch.net/index.php/fnr/article/view/1006.