Lima, Luis Mauro Alvim de, et al. “ Short-Term Treatment With Metformin Improves the Cardiovascular Risk Profile in First-Degree Relatives of Subjects With Type 2 Diabetes Mellitus Who Have a Metabolic Syndrome and Normal Glucose Tolerance Without Changes in C-Reactive Protein or Fibrinogen ”. Clinics, vol. 64, no. 5, May 2009, pp. 415-20, https://doi.org/10.1590/S1807-59322009000500008.