Erratum to: Liraglutide Improves Cardiovascular Risk as an Add-on to Metformin and Not to Insulin Secretagogues in Type 2 Diabetic Patients: A Real-life 48-Month Retrospective Study (Diabetes Therapy, (2018), 9, 1, (363-371), 10.1007/s13300-017-0338-4)