<qa>  What is the standardized action at each session?At each session, standardized actions are applied, which are assessed with preset indicators. At the initial and at yearly visits the following laboratory tests are taken: glycated hemoglobin, blood chemistry, lipid profile, liver function tests, albumin-creatinine index in an isolated urine sample, and 12-deviation electrocardiogram. At the yearly visits the patients receive reinforcement and treatment modifications as needed. 