The global number of patients with diabetes mellitus (DM) has been growing steadily. Over the past decade, the number has more than doubled and reached 371 million people by 2013. [1] In most cases it is type 2 diabetes. The dangerous consequences of DM include micro- and macrovascular complications: nephropathy, retinopathy, lesions of the major blood vessels in the heart, brain and lower limbs. Late complications of DM are a major cause of disability and mortality of the patients.