RETRACTION: the Platelet-Derived Growth Factor A-an Additional Pathophysiological Factor in Hepatic Steatosis and Fibrosis Development Both in Patients with Hepatitis C and Patients with Prediabetes (vol 68, 10.2337/Db19-1909-p, 2019) (retraction of Vol 68, 10.2337/DB19-1909-P, 2019)